Okay reading about amps has led me to the conclusion that there is a world of knowledge out there and I am in kindergarten. I didn't even know about the whole 7.2 and 9.2 development. So I have a 2.1 system primarily set up for music but with the addition of a HD projector and high end screen I feel I'd like the sound to catch up to the visuals. Furthermore, and correct me if I'm wrong but it seems movies will be moving away from 2.1 and if I want to fully appreciate the home theatre experience it's time to step up to the table and join the multi channel world. With 5 vs 7 available how does one choose? Is it a matter of space? Will one be phased out? What about this whole 2 sub business? Is it worth getting into or too new? And what;s the point of 9 channels does anyone offer movies or music in that format? Or is it a gimmick? Where is the sweet spot for multi channel and where is the wind blowing? I'll use TVs as an analogy with 3D TV coming out I don't feel the need to add another HD TV to my house (since I have a projector) right now because non 3D TVs will probably start dropping in price and 3D TVs are probably too new to invest in the first generation (heard they will be coming out in a month and starting at 2.5 K Canadian).