I've had both Nankang NS2-R's on mine and now PS4s. The Nankangs are a track orientated tyre and wear really well for a soft compount. Grip really well, and give loads of feedback. They have a very still sidewall, and square shoulder so dont wear as badly if your pushing on in corners. Wet grip is surprisingly good for a semi-slick. The only downside is they are REALLY loud and a bit more crashy over bumps.
PS4s are a more compient and give a quieter and more compient ride.