I have Yoko C-drives on the front at the moment and they are the best tyre I've had in a long long time. I have Michelin PP2's on the back (were on the front) and they were good, but the C-Drives are better and heaps quieter too.
I've also had Fulda's, eeewww, noisy, and squeely (no, not fromt burn outs) and not too much grip around sharp bends.
I'll be buying C-Drives again that's for sure.