In January I decided to find out! I had the ability for an 11.2 speaker set-up, time to push past the 5.1 AVR. (Talk like that could get very expensive, very fast and that's not even mentioning if it would be worth it.
Regrettably, what I thought was a fair compromise has turned to an incentive to spend more.
) The AVR I compromised on will only do 7.2, but has PLz & DSX. I found going past 5.1 unquestionably better IMHO I'm enjoying the additional rears for movies (DVD and Blu ray). I love the wides for music. I haven't done much critical listening with the heights (soon to come) so I'm neutral on that thus far.
So I guess I'd have to be 7.2, but cant wait to be 9.2 or 11.2!