Mantic is new and cost some $$. Peddle is heavy too.

From what experience I have with clutches, nothing beats the McLeod rxt.

Sintered iron is nice for racing but they are not made to last long. I ran one in my vette.

I've got the monster stage 3. So far it's holding up pretty well. I think I need to bleed the hydraulics.. it's disengaging really far into the pedal. I got it setup so it should be easy.. i'm just lazy.

I thought the Spec stage 3+ felt a tad better. It was a little heavier. Lasted about 4 years of launching at seekonk and autox events. Not sure what the quality of Spec is like these days though...