What additional speakers should I get to go full 9.1?
I've got a decision to make and I'm torn so I need your help and wisdom please...
Currently my system is a Dali Zensor 5 5.1 system with the addition of front height/presence speakers so I've got Dali 5's as the front pair with a Vokal centre and Zensor 1 rears with another pair of Zensor 1's at the front high above my Zensor 5's which are my front height/presence speakers and all are powered by my Yamaha RX-A2020 receiver.
I'm contemplating going full 9.1 now so adding another set of speakers to the sides of my seating position and moving the rears accordingly which means moving them further along the rear wall ideally. My question is what speakers should I add for those additional surrounds?
My room is only 4.5m x 4.0m and it already resembles a speaker/AV showroom so ideally I think adding smaller speakers would be ideal so they are less noticable, smaller and easier to install but I'm worried the sound would be compromised by going down this route, would that be true? I know they would only be dealing with certain frequencies and at certain times but would I notice a difference in the soundfield or does it just mean carefully selecting suitable speakers?
Or would the ideal solution be to just stick with the Zensor 1's and not worry about the impact they make in the room? I don't like that idea but if it's the best way forward then so be it but something alot smaller would be far better for my room so if you have any suggestions I would really welcome your input.