My current set-up: A/V Receiver = Yamaha V2400 Fronts = Yamaha NS-A2835 Towers Surround = Yamaha NS-A6335 Book Shelf Rear Effect = Yamaha NS-AC2 Center Sub = Yamaha YST-SW320 Room = 13’x21’x8’ (2184 cubic feet), one 4’x6’ opening into another room I have never been real impressed with my Yamaha sub, it seems to have a lot of distortion and can’t “keep up” with fast low base sounds. I just got the Batman series and it really kills it, I can’t believe the amount of low base in those movies!!! I have been shopping and planning on replacing all my speakers with Rockets in the not so far future. RS-750’s up front, RSS300’s for surround and RS-250’s for rear effects. Well then I got to thinking that I am not really unhappy with my current Yamaha speakers, but I am unhappy with the sub. So I think it makes more sense to replace the sub first and put off get the Rockets. I have been looking at the SVS’s because I have heard so many good things about them, and I have read and learned enough to know that it is no easy decision to make and a pretty big hunk of change to spend. I also have looked at the Rocket subs but on paper they don’t seem to be up to what the SVS’s are? I am considering the following SVS 16-46 PC+ SVS 20-39 PC+ SVS PB2-ISD SVS PB2-Plus Rocket UFW-10 This is pretty much strictly for Home Theater movie use, music is not of concern. I listen at a pretty high volume but not ear shattering by any means. I am looking for good strong base, the kind where you can feel the punch as well as hear it if you know what I mean. Can I get away with one good Sub or do I need to go to duals, I have thoughts of hooking my SW320 into the surround channel when I replace it also. Any advice I can get would be great, I know this can be a pretty deep subject, I have learned much by reading through the other posts on the subject already.