Summary: The center channel is very important...and this is a good one. I've combined this center channel with the RC80i ceiling speakers for the rear and Tsi 300 for the front satelites (and a 12" sub). This is my first 5.1 set-up so I don't have a lot to compare to. What I can say is that the 5.1 exerience is far supperior to a front only set-up (ok - not a news flash). This center speaker provides a great balance to the rest of the system.
Pros: Price, performance, balance, well matched with other Polk Tsi speakers.