whats the best aftermarket clutch??

does anyone know what is the best aftermarket clutch?? how much of a difference does it make peformancewise and how much do they run for?? thanks

tom

Exedy...they make the STi clutch...the ACT street and Centerforce are good also...Dont get a racing clutch, though, make sure you get one that is Center Sprung to take away some of the driveline shock...