| I prefer Perellis
Super Corsas are great especially when cut so the grooves extend to the edge, Diablos are excellent, just got another set yesterday, also got a set of Diablo Corsas but haven't tried them yet.
Also happy with Metzelers the Rennsports are great on the track, I have recently been using Sportecs on the 916 including the Cadwell trackday where they did a excellent job.
Dunlop D207RRs again are a good tyre as is the D207GP but these need to be warmed up before pushed. | 
skidlids
Threaded Mode