My room is 14'(w) x 21'(l) x 8'(H). The sub will be in rear corner. I'm looking for less floor space. Chocies are the 25-31 PCi or PB10-ISD. If those are not good enough to fill the room, than the choices are 20-39PCi or PB12-ISD. They will be for movies and music at moderate levels. Also the rest of the speaks are going to be Klipsch Raference Series or Kef Satallites. Please help me out, I know very little about this stuff.