Summary: My Polk TL2 Center was getting the job done but found its sound to be thin matched with Tsi100s so CS10 investment was needed . I went on the hunt finding lowest price with free shipping at Crutchfield.
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.
Pros: Price, performance, balance, well matched with other Polk Tsi speakers.