Just last year I bought a couple of M2's to serve as the rear surrounds in my 7.1 set-up. I thought that 4 QS8's would be overkill and when someone suggested M2's I jumped at that scenario. I'm glad I did. The rear surrounds do make a difference in certain scenes, and 7.1 Blu-ray disks like 3:10 to Yuma are amazing. One scene during the stagecoach robbery has a bullet travel from the right main and ricochet from the left QS8 to the rear M2. Once you hear a good 7.1 set-up, you won't go back.

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