I'm currently running a 5.1 setup with M60's for the front's with a VP150 for the center. I've also got a pair of QS8's on the sides. I've been thinking of adding a pair of M3 bookshelves to drive my back channels when I step up to 7.1
So my question is how do you like that setup? Do you feel that it really balances it out? Or do you think using QS4's might be a better way to go. Maybe we could start a poll: M3's vs. QS4's for the rear channels?
Well my setup is very much like yours (M60, VP150), but you have more speaker on the sides, 8's vs my 4's. My rears are NHT's from 1990! One inch tweeters and 4.5 mid's have been carrying the load and continue to do so.
The biggest difference occurred when I moved to a 7.1 and put the QS4's into the mix. I lost the directionality to rear sounds and the sound became so much more natural. I'm sure you are already hearing this with your QS8's on the side.
With that in mind, I think it is a no brainer to round out the 7.1 with QS4's. Why add directionality?