I am in the process of changing speakers. Here is my current setup pioneer sc-05 polk csi5 center Polk RTi8 ( fronts) Polk Monitor 70 series 2 ( rear surround) Polk Monitor 60 (side surround) Paradigm dsp-3200 I am going to sell my monitor towers and I am switching to 5.1 because of my room layout. I am going to use polk FXi A4 for surrounds. I am thinking of getting a SVS pb-2000 to replace my paradigm. Would that be a significant upgrade? Also, here is a pic of my room. I'm not sure where to put the surrounds. I can put them on the back wall or side wall. I would love to do 7.1 but with my couch against the wall I don't think it will work well.