I am trying to make a HT and music set up in my new 20' x 21' room. This is on a real budget and was planning on a 5.1 set up. The speakers that were planed are two Sony SA-WM40 12" subs, and four Advent AS2 towers. The AS2 is a smaller tower that has two 6.5 woofers and a tweeter in each. I am unsure on the brand/make of center channel speakers at this time. Is a 6.1 set up that much better than the 5.1? For a receiver I am planning on either a Denon avr 1803 or a Kenwood VR 6070. Does anyone have any recommendations or experience on any of these items?