I've had some Supercorsas on since June - an SC1 front and an SC2 rear and they have worn amazingly well. About 2000 miles and 4 trackdays and they still have life left in them. They're a bit scary in December drizzle but in the dry the grip is fantastic. Probably a bit past their best now for outright grip. I didn't think they'd last anything like as long.
So rennsports/Racetecs then...........