Well, I'm impressed with the C2 but not the C1.
I also have their Xenyth 1204 FX mixer which is excellent for live but too noisy for recording.
My main reason for buying the B1 is a kind of "Thank you" to their Technical Support which is the best I have encountered.
I'm about to test the B1 but honestly am not expecting it to exactly blow me away. At the end of the day, it's a $100 condenser in an exceptionally fancy package but a $100 microphone just the same.