Hello, I am currently looking to upgrade my system with new speakers and a pre/pro and amp. I'm really only interested in a good movie experience as I don't really listen to much music and when I do they're mp3s off my laptop run through the system. I'm considering the Kef Q series in one of three configurations and don't know which would be better. Also, I don't don't know if a sub would be needed if I use four towers. I currently have a 5.1 setup with sub and am considering the follow: 2 Q7 2 Q5 1 Q9c 1 SVS 25-31PCi (?) 2 Q7 2 Q1 1 Q9c 1 SVS 25-31PCi (?) 4 Q1 1 Q9c 1 SVS 25-31PCi If I were to use either of the first two configurations would I want a sub, especially with the second config? I know the sub can go lower than the towers, but from the specs it doesn't appear to go much lower than the Q7. Would it be too boomy with the towers and subs? Any thoughts would be appreciated. Thanks in advance.