I would say since you have the M60s, go for the QS8s. I just got my system hooked up last sunday and i LOVE the QS8's. They are simply amazing, I didn't listen to any SACD, but I sourced my 2 channel CDs through the surrounds and man, it sounded just simply amazing.
For movies as well, they just dissapear into the room, like you don't even know where they are, you just hear sounds coming from the left and the right, its great.
I have mine sitting on some "Premo" soup cans to expose the bottom woofer (I think Bridgeman patented the idea). My friends argued that they thought Campbells cans would work better, I may have to do some critical listening to get to the bottom of this.
