Another vote for Centerforce DF. I used to think my mom's corvette clutched easily, like a baby could do it. That was compared to my King Cobra before that exploded into a million little pieces. Then I got the DF, and after a while I went back in the corvette and it felt like I was trying to clutch a peterbilt compared to the DF. The centerforce is so easy a 4 y/o could drive it easily. And it grabs like a mofo. Damn does it hold. 285 hp + 125 hp (nitrous) no problem. It grabs so hard at high speed it makes this THUNK noise and you can feel it in the car. I love it. Buy it NOW.
Edit: Remember to resurface the flywheel or get a new one. I recommend the lightest D&D one you can get. I have I think a 7.5 or 8.5 lb Aluminum one. No drivability problems. Car is much faster and revs in Neutral from 900-5500 in like a quarter of a second.