OK, I have MK950 for my fronts. What I need to know is, my room is 14.5w x 19L x 7.5h. I sit 11ft from the fronts so I have 6.5ft to my rear wall and I am 7ft to each side. I have or am going to get QS8 for my side rears, but am I better with a direct radiating for the rears or QS8. 100 movie viewing, if I watch music videos I do it in 2ch

If you have 6.5ft behind you then I would say Q's all the way around.

I would think QS's all around might be best but you may find 6.5' is sufficient room to use direct radiating speakers, personal preference may come into play here, I would try both and see which you like better.

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.