I recently purchased a pair of of TSi500s and a CS20. I am looking to get surrounds for a 5.1 setup and eventually go to a 7.1 setup. I have been looking at the Polk Audio FXi A6s as a solution for my surrounds. I have heard great things about setting up bipole/dipole speakers vs. going with monopole speakers. Would the FXi A6s blend well with my TSi500s and CS20?