Need help with a good quality speaker setup

I have a fairly small room 22'x 14'x 8'. I am running a Pioneer Elite VSX-45TX Receiver. Currently have Polk Audio RM6600 surround system. Looking to upgrade to System with Front Floor Standing. Used a lot for both movies and music. Been looking at the Polk Lsi's, Energy, Paradigm & Definitive. I have been leaning towards the Definitive, but have heard that the bipole towers are just a waste unless you have room to put them in away from the walls. Any help, ideas, or suggestions would be appreciated.