The first reviews of the S4 are now in and a lot the hardware sites are placing it second to the HTC One, but ahead of the 920, Iphone5 + Experia Z.
Whilst they like the screen, and the SD slot, the camera (in good light), Android 4.2 etc - other aspects they are not so keen on.
Most of Samsungs added features like Smart Stay, Smart Scoll, Air Gestures and so on are being called unneccessary or even glitchy. Other areas of the UI and Samsung Hub, media sharing also lag behind its competitors.
The plastic feel is not liked, battery life seems lower (or on a par) with the One, and the UI is being called overcomplicated compared to Sense. The low-light camera performance is well below the One/Lumia 920, and the video camera is also not as good, and rear speaker is poor compared to the One's stereo front speakers.
And despite benchmarking slightly higher than the One (its CPU+GPU are clocked around 12% higher) - the HTC One seems to be smoother in general use due to Touchwiz.
Perhaps HTC is on for a comeback with the One.