I have QS8's for my side surrounds and M2's for my surround backs. I love them both especially when I play a 7.1 movie. When I'm playing a video game and listening to dialog, if I rotate the camera so the audio moves from speaker-to-speaker around the room, I can't tell a difference between the two types Axioms. It just might be the acoustics in my current room, though.

"Not throwing my hands up or my dress above my ears don't mean I ain't awestruck." Al Swearengen