I have a pair, and I've used them with the QSC K-8s on top - awesome, tight and thumpy. I have to admit - I used the K8's alone, and the difference was NOT night and day. It's not fair to say I used them the same each time - the sub really helped out at graduation with 350 people in the room. The QSC's are wonderful, but when they are on sticks, you need the extra "ooomph" if you really wanna fill a room.

... or, you could just use your Bose, like I do 98% of the time!