Thanks for the comments. there is no room for book shelf speakers in my entertainment center. I went to Frys to take a listen to the speakers. The speakers I had listed above sound kinda muddled. The salesman there talked me into getting a pair klipsch RF42 II tower for $480 (amazon has it for $300 each). He told me I can use the current sub and center from my old klipsch HD 500 system, saying this setup would be better than the Jbl es80, primus 363, or Polk rti8 with a new center. Do you agree or did the salesman got me?