My fraternity's been looking to buy a new speaker setup recently on a budget of ~$550. It's gonna be used strictly for music in a room that's about 20' x 15' (this is a generous estimate, it's probably less than this), and it's a dance floor room, so bass is pretty important. Originally, I was going to get a receiver and a subwoofer and use the speakers I already have (pictured here: http://i40.photobucket.com/albums/e242/sacredraider/IMG_0397.jpg), but I was recommended on another forum to get these instead. http://www.amazon.com/gp/product/B00009WBYI/ref=cm_cd_asin_lnk 2 of these http://www.amazon.com/gp/product/B001AMUFMA/ref=cm_cd_asin_lnk and this receiver On another forum, I was recommended to get this http://www.overstock.com/Electronics/PylePro-1200-watt-Complete-DJ-Speaker-System/4685954/product.html?rcmndsrc=2 I'm leaning towards the DJ setup because of the 4 channel amp, and it looks like something a fraternity house could really use, especially with the mic setup. I'm worried about the bass though. Thoughts?