My room is 18x19 with vaulted ceilings. I went with the Polk monitor 50's for fronts, Polk CS1 for the center and the Polk DSW pro550wi sub. The wife put a constraint on the size of the sub, so I could not do anything bigger than a 10" sub. I purchased the fronts and center from Newegg for cheep and I picked up the sub from the Polk Audio Direct storefront on ebay. The sub was manufacture refurbished, but I could not tell the difference. I know it is not the best system out there, but for a budget build it sounds awesome. Additionally, I picked up the Polk OWM3 for $69 on Newegg for the rears. The wife also vetoed large rear speakers and these passed the test and are better than satellites IMO.