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Best TV 2021: the best 4K Ultra HD TVs

Best TV Buying Guide: Welcome to What Hi-Fi?'s round-up of the best TVs you can buy in 2021.

There's just one problem with 4K TVs: there are so many of them! Start from scratch and it can be almost impossible to work out which one is best for you. We're here to help, though, so before you tumble down the well of indecision, allow us to take you by the hand and lead you along the path to TV perfection.

We've run the rule over all the major televisions we've tested to bring you the best TVs available in 2021. If a TV is on this list it's a bonafide hit, so you know you're getting top bang for your buck.

These TVs are the very best options for feasting your eyes on all the Ultra HD content that's now available – the likes of Amazon, Netflix, Disney+, Google Play Movies and Apple TV are full of 4K TV shows and movies at this point. Plus you can buy 4K Ultra HD Blu-rays. Basically, there's never been a better time to take the plunge.

Below you'll find TVs of various sizes, budgets and technologies, from 55 inch TVs to OLED TVs, small TVs to cheap TVs, and even 8K TVs. If gaming is your priority, take a look at our round-up of the best gaming TVs you can buy, which goes into extra detail on game-specific features to look our for.

Do also take a look at our guide on how to choose the right TV for your needs, and check out our round-up of the best TV wall mounts if you're looking to get your set on the wall. Without further ado, here's our pick of the best TVs you can buy right now.

Best TV 2021: the best 4K Ultra HD TVs

(Image credit: Future / Coming To America 2, Amazon Prime)

1. LG OLED65G1

LG’s new 'OLED Evo' TV is a stunner

SPECIFICATIONS

Screen size: 65in (also available in 55", 77") | Type: OLED | Backlight: not applicable | Resolution: 4K | HDR formats supported: HDR10, HLG, Dolby Vision | Operating system: webOS 6.0 | HDMI inputs: 4 | ARC/eARC: eARC | Optical output: Yes | Dimensions (hwd, without stand): 83 x 145 x 2cm

Reasons to Buy

Brighter, punchier and sharper
Beautiful when wall-mounted
Improved remote and app offering

Reasons to Avoid

No feet or stand in the box
Sound lacks excitement

For the last few years, the C-class model has been the sensible choice of each new LG OLED range. Until now, it has been the most affordable model with the latest panel and picture processing tech: go further up the range and you might get better sound and a fancier design, but you won’t get a better visual performance.

For 2021, though, LG has introduced a new ‘OLED Evo’ panel that promises increased brightness and sharpness, and to get the Evo panel you have to step up to the G1. That’s slightly disappointing because you also end up paying extra for a rather niche design (the G1 is designed to be wall-mounted, to the extent that there's no stand or feet in the box) that you may not want.

It won’t be possible to make a final judgment on the value of the Evo panel until we’ve also tested the non-Evo C1, but the G1 is without a doubt the best LG OLED we’ve tested so far.

It takes the picture performance of last year’s GX and CX and improves upon it in almost every way without introducing any flaws. That makes it a seriously stunning picture performer. It's also packed with apps and next-gen HDMI features, including 4K@120Hz on all four sockets.

Sound is less strong, and the design won't be ideal for everyone, but if you were always intending to wall-mount your new TV and combine it with a separate sound system, the G1 should be right at the top of your list.

Read the full LG OLED65G1 review

Best TV 2021: the best 4K Ultra HD TVs

(Image credit: Sony / The Boys, Amazon Prime)

2. Sony XBR-48A9S

Sony’s first 48-inch 4K OLED TV is extraordinarily good.

SPECIFICATIONS

Screen size: 48in | Type: OLED | Backlight: not applicable | Resolution: 4K | HDR formats supported: HDR10, HLG, Dolby Vision | Operating system: Android TV 9 | HDMI inputs: 4 | ARC/eARC: eARC | Optical output: Yes | Dimensions (hwd, without stand): 62.4 x 106.9 x 5.8cm

Reasons to Buy

Striking picture
Bold sound
Solid app selection

Reasons to Avoid

Expensive
Lacks next-gen HDMI features

It's official: 48 is the new 55. Time was that you couldn't get an OLED TV under 55in, but then LG launched the world's first commercially available 48in OLED set. And now Sony has one of its own.

Sony has embraced the smaller size, making the TV as petite as possible thanks to its tiny bezels and low pedestal stand. It does have a rather large enclosure bolted onto the back (to house the speakers, processing hardware and connections), but you'll only notice if you look at the set side on.

Disappointingly – and somewhat surprisingly for such a cutting-edge TV – it lacks some next-gen HDMI features like 4K@120Hz (HFR)VRR (Variable Refresh Rate) and Auto Low Latency Mode (ALLM – basically automatic switching to the TV's game mode when appropriate). Which is bad news for gamers looking to hook up a PS5 or Xbox Series X.

But that's about the only fault we can find with this TV. Sony's X1 Ultimate processor makes images suitably stunning, there's plenty of dark detail on show, and it serves up pretty much every streaming app you could hope for. Motion control is still industry-leading, and in terms of sharpness and detail, there's never been a better TV at this size. If you can stump up the funds, you will not be disappointed.

Read the full Sony XBR-48A9S review

Best TV 2021: the best 4K Ultra HD TVs

(Image credit: Sony / Hunters, Amazon Prime)

3. Sony XBR-65X900H

One of the best performance-per-pound 4K TVs you can buy.

SPECIFICATIONS

Screen size: 65in | Type: LCD | Backlight: Full array | Resolution: 4K | HDR formats supported: HDR10, HLG, Dolby Vision | Operating system: Android TV 9 | HDMI inputs: 4 | ARC/eARC: eARC | Optical output: Yes | Dimensions (hwd, without stand): 83.3 x 145 x 7cm

Reasons to Buy

Superb HDR
Colors pop
Excellent motion processing

Reasons to Avoid

Lightweight sound
Could be more PS5-ready

The XBR-65X900H was less "Ready for PS5" at launch than the marketing suggested, but it does now have 4K@120Hz support and is still due to get VRR and ALLM (neither of which the PS5 currently supports) via a future firmware update.

With or without these console gaming features, this is an awesome TV. There are plenty of connections for hooking up partnering kit, and you won't be wanting for onboard tech: this is a full-array LED-backlit TV with local dimming, and supports the HDR10, HLG and Dolby Vision HDR standards, and Dolby Atmos for sound. It’s also Netflix Calibrated and IMAX Enhanced.

And the picture quality? Excellent. Sony’s X-Motion Clarity motion processing technology is reliably superb, making fast-moving pictures like games, sports and action films as smooth as butter. There are plenty of options to fiddle with, but just leave it on auto and you'll still be treated to a great experience visually. It even impresses on the audio front, with a high degree of precision making both voices and sound effects nice and clear. Ideal for both gamers and non-gamers alike.

Read the full Sony XBR-65X900H review

Best TV 2021: the best 4K Ultra HD TVs

(Image credit: LG / The Boys, Amazon Prime)

4. LG OLED48CX

LG has produced the first sub-50in OLED of the 4K era – and it’s just as brilliant as we’d hoped.

SPECIFICATIONS

Screen size: 48in (also available in 55in, 65in, 77in) | Type: OLED | Backlight: not applicable | Resolution: 4K | HDR formats supported: HDR10, HLG, Dolby Vision | Operating system: webOS | HDMI inputs: 4 | ARC/eARC: eARC | Optical output: Yes | Dimensions (hwd, without stand): 24" x 42" x 1.8"

Reasons to Buy

Flagship-level OLED performance
Dramatic but natural picture
Forward-looking feature set

Reasons to Avoid

Expensive for its size

We'd been waiting for this moment for a long time. After years of waiting, LG finally launched the first 48-inch OLED TV in 2020, bringing true flagship OLED TV performance to under 55 inches fir the first time.

And it really is a fabulous performance. This isn't a downgraded flagship TV – it's a downsized flagship TV. It offers the same performance and features as its bigger brothers in the CX range (which, let's remember, also match the more expensive GX, RX and WX in terms of picture quality and processing), but in a smaller, more living room-friendly package.

The performance is superb. The perfect blacks and near-perfect viewing angles we're used to from OLED combine with bright, punchy whites and vibrant but natural colors. LG's 2020 motion processing is the best it's ever been, too, and its OLEDs continue to impress in terms of upscaling 1080p and standard-def content.

On top of all that you get certified HDMI 2.1 sockets that support next-gen features such as eARC (Enhanced Audio Return Channel), HFR (High Frame Rate), ALLM (Auto Low Latency Mode), and all current formats of VRR (Variable Refresh Rate). Those last two features will be of particular appeal to those gamers looking to upgrade to the PS5 or Xbox Series X.

Read the full LG OLED48CX review

Best TV 2021: the best 4K Ultra HD TVs

(Image credit: Future / How to build a girl, Amazon Prime)

5. Samsung UN55TU8000

The new TU8000 represents exceptional value for money.

SPECIFICATIONS

Screen size: 55in (also available in 43in, 50in, 65in, 75in and 82in) | Type: LCD | Backlight: edge LED | Resolution: 4K | HDR formats supported: HDR10, HLG, HDR10+ | Operating system: Tizen | HDMI inputs: 4 | ARC/eARC: eARC | Optical output: Yes | Dimensions (hwd, without stand): 28" x 48" x 2.4"

Reasons to Buy

Brilliant HDR picture
Bags of tonal detail
Punchy colors

Reasons to Avoid

Not particularly bright
Uninspiring sound

Samsung's 8-series has traditionally been positioned just below the company’s glamorous range-topping QLEDs. In the past, it has proven to be the sweet spot where picture quality and price intersect to maximum effect. And so it proves once more.

The TU8000 is astonishingly good value. For comparatively very little money you're getting a 55-inch TV that performs brilliantly, particularly with HDR content, and boasts the best, most app-laden operating system available at any price.

It's sound is only so-so and it's lacking the outright brightness and next-gen HDMI features of its premium siblings, but it's still undeniably brilliant for the money.

Read the full Samsung UN55TU8000 review

Best TV 2021: the best 4K Ultra HD TVs

(Image credit: LG / Paatal Lok, Amazon Prime)

6. LG OLED55CX

The core model in LG’s 2020 OLED TV range is an astonishingly capable all-round performer.

SPECIFICATIONS

Screen size: 55in (also available in 48in, 65in and 77in) | Type: OLED | Backlight: not applicable | Resolution: 4K | HDR formats supported: HDR10, HLG, Dolby Vision | Operating system: webOS | HDMI inputs: 4 | ARC/eARC: eARC | Optical output: Yes | Dimensions (hwd, without stand): 28" x 48" x 1.8"

Reasons to Buy

Picture is exciting but natural
Improved motion and dark detail
More future-proofed than most

Reasons to Avoid

Missing some catch-up apps

We've already covered the new 48-inch version of the CX above, but it's worth remembering that the 55-inch and 65-inch models are also still available and the bigger you go, the better value you get.

The picture performance is just as excellent on these bigger sets, and simply more cinematic to boot, and of course the next-gen HDMI feature set and smart platform is the same, too. What's more, the bigger sets sounds a little bigger and fuller, too, thanks to the bigger chassis, although it's worth bearing in mind that the CX isn't the best-sounding TV in its class and that you're well advised to also budget for a soundbar.

All told, this is a superb all-rounder in whichever size you buy it.

Read the full LG OLED55CX review

Read the full LG OLED65CX review

Best TV 2021: the best 4K Ultra HD TVs

(Image credit: Samsung / Truth Seekers, Amazon Prime)

7. Samsung QN55Q90T

Samsung’s top 4K model for 2020 is punchy, feature-packed and good value.

SPECIFICATIONS

Screen size: 55in (also available in 65in, 75in) | Type: QLED | Backlight: direct LED | Resolution: 4K | HDR formats supported: HDR10, HLG, HDR10+ | Operating system: Tizen | HDMI inputs: 4 | ARC/eARC: eARC | Optical output: Yes | Dimensions (hwd, without stand): 28" x 48" x 1.4"

Reasons to Buy

Brilliantly bright and punchy
Superb operating system
Improved motion and sound

Reasons to Avoid

Slightly exaggerated colors
OLEDs offer better blacks

The Samsung Q90T is a slightly tricky proposition. It’s the top 4K TV in Samsung’s 2020 TV range, but as a result of the company’s increased focus on 8K models, it’s also less of a flagship model than last year’s Q90R.

Whether you consider the Q90T to be the true successor to the Q90R or not, it is a better TV overall. It has a more natural balance, significantly better motion and a much-improved sound system. It’s true that it doesn’t go quite as bright or quite as black but, in fairness to Samsung, the Q90T is also more aggressively priced.

More important than how it fares against its discontinued sibling, though, is how it fares against similarly priced 2020 TVs such as the LG OLED55CX. This set goes blacker and produces brighter highlights in otherwise dark images, but the Samsung is vastly punchier with almost everything you watch and images pop from the screen in a way that OLEDs still can’t match. It also has the best, most app-packed operating system by quite a margin, and a feature set that will keep it relevant for years to come. 

There’s no doubt that the Samsung Q90T is an excellent TV, and you certainly shouldn’t discount it for not being an OLED or not having as many dimming zones as its ‘predecessor’.

Read the full Samsung QN55Q90T review

Best TV 2021: the best 4K Ultra HD TVs

(Image credit: Sony / Absentia, Amazon Prime)

8. Sony XBR-55A8H

Sony’s top 2020 OLED is one of its best TVs yet.

SPECIFICATIONS

Screen size: 55in (also available in 65in) | Type: OLED | Backlight: not applicable | Resolution: 4K | HDR formats supported: HDR10, HLG, Dolby Vision | Operating system: Android TV 9 | HDMI inputs: 4 | ARC/eARC: eARC | Optical output: Yes | Dimensions (hwd, without stand): 28" x 48" x 2"

Reasons to Buy

Natural and authentic picture
Superb motion handling
Crisp, involving sound

Reasons to Avoid

High-contrast images lack punch
Lacking next-gen HDMI features

This set is practically all screen – the black bezel is flush with the screen so you don’t notice it when the set is off. The fact it's so thin puts the emphasis squarely on the screen.

And what a screen it is. Images are beautifully natural, lending themselves to a cinematic authenticity that's great for movies. Dark detail is a particular highlight, though in high contrast sections (like white credits on a black screen) the Sony tends to play it a little safe. We would've liked more punch.

Typically for a Sony, the motion processing is superb, and SDR content remains vibrant and dynamic. It even makes standard definition content watchable. Just.

On the audio side, the A8 lacks a little bass depth and weight, but otherwise impresses with its crisp, dynamic delivery. It sounds a lot better than most of its similarly-priced rivals, though of course we would always recommend partnering it with a dedicated sound system to really enhance the experience.

Read the full review: Sony XBR-55A8H

Best TV 2021: the best 4K Ultra HD TVs

(Image credit: LG / Bosch, Amazon Prime)

9. LG OLED65GX

LG’s 2020 OLED TV range got off to a superb start with this beautifully designed ‘Gallery’ model

SPECIFICATIONS

Screen size: 65in (also available in 55in, 75in) | Type: OLED | Backlight: Not applicable | Resolution: 4K | Operating system: webOS | HDR formats supported: HDR10, HLG, Dolby Vision | Operating system: webOS | HDMI inputs: 4 | ARC/eARC: eARC | Optical output: Yes | Dimensions (hwd, without stand): 33" x 57" x 0.8"

Reasons to Buy

Consistent, natural performance
Improved motion and dark detail
Lovely design

Reasons to Avoid

No feet or pedestal in the box

While we'd usually like to start the year with the C-class model, which is the most affordable set with all of the best picture processing, it was the GX that we got first in 2020, and takes that same picture and adds more powerful sound and a beautiful design.

This is LG's 'Gallery' model, and as such is entirely intended for wall-mounting. You don't even get a stand in the box (although feet can be bought separately), with a low-profile mount provided instead. The set is a uniform 2cm deep, which is exceptionally slim. 

Picture-wise, LG has taken the exemplary performance of its 2019 OLEDs and improved it in a few key areas, with dark detail, color richness and motion handling all getting a worthwhile boost. The set sounds decent, too, particularly for one with essentially invisible speakers.

Read the full LG OLED65GX review

Best TV 2021: the best 4K Ultra HD TVs

(Image credit: Sony / Hanna, Amazon Prime)

10. Sony XBR-49X950H

The 49X950H is the latest in a long line of superb 49in TVs from Sony.

SPECIFICATIONS

Screen size: 49in (also available in 55in, 65in, 75in 85in) | Type: LCD | Backlight: Direct LED | Resolution: 4K | HDR formats supported: HDR10, HLG, Dolby Vision | Operating system: Android TV 9.0 | HDMI inputs: 4 | ARC/eARC: eARC | Optical output: Yes | Dimensions (hwd, without stand): 25" x 43" x 3"

Reasons to Buy

Punchy, rich picture performance
Vastly improved sound
Snappy user experience

Reasons to Avoid

Same design as last year
Some backlight bloom

Sony basically reused the shell of 2019's X950G for this X950H, which is a bit of a shame as it's fairly thick and has awkward-looking feet that give the set an overly wide footprint. But the set looks fairly smart in its own right. You do also get a better remote that's neatly laid out and doesn't require line of sight in order to send commands to the TV.

Most importantly, that shell has been stuffed with upgraded kit, including Sony's flagship processor, the X1 Ultimate, which brings with it lots of picture improvements. All told, this is a punchier and more richly colored performer than its predecessor, with more dark detail and the excellent motion processing for which Sony is renowned. It sounds impressively weighty and solid, too.

Other than a bit of blooming from the direct LED backlight, this is a great buy, particularly if you can't stretch to one of the new 48-inch OLEDs.

Read the full Sony XBR-49X950H review