The one caveat I didn't add was that if you're going to auto-x, rally, hi-rev launch, etc., you'll get a varying degree of engagement satisfaction from each of the clutches discussed in this thread. Several folks are running stock subaru clutches and stock tires and auto-xing with no clutch problems. Those of our colleagues who are running stock clutches and using grippier tires to auto-x are perhaps ending up with slipping clutches sooner in the replacement cycle. I wonder if there's a correlation there? Huh!
Bottom line, is that clutches are a wear-and-tear item for good reason. The more you wear and tear them, the sooner you have to replace them. Then it's just a matter of finding the next clutch/pressure plate combo that will extend the time between failure of the next one and not grenade your drivetrain while giving you reasonable driveability too. Not too much to ask, is it? ... and I'm not sure there is a definitive answer for each individual, just trial and error and word of mouth.