Summary: The Tsi CS 10 is performing very well. I originally wanted to purchase the CS 20, based solely on reviews read. But stayed with CS 10. I am very satisfied with it's performance as the center channel speaker, it is rich and full. The audio for voice is crisp. My rooms dimensions dictated my choice. I'm sure the CS20 would have been incredible,but I would not have been able to enjoy it as it was intended. Also my neighbors probably would not have appreciated it.
Pros: The black finish is nice and clean. The dimensions are perfect for placement in a cabinet. The sound is very satisfying.
Cons: Wish my room was much larger. To fill with more sound.
Summary: I just put together a new home theater system using TSi300's as the front speakers, TSi100's as the rear speakers, a TSi CS10 as the center speaker, a PSW125 sub, and a Sony STR-DN840 receiver. Everything sounds great so far. I have no complaints.
Summary: I could not be more impressed by the value of this 'little' center channel speaker. I must admit that I was a sort of disappointed by how large the speaker box is after I set it up, but after a few days, I don't notice it and the sound of my movies is so much better. My girlfriend no longer lunges for the remote during action scenes, and dialogue is incredibly clear.