There are some fundamental differences I've noticed between the ACT Street clutch and the Clutchmasters Stage-III.
The ACT will push back at your foot...it's a much heavier clutch pedal; it grips well.
The ClutchMasters feels like a stock clutch, totally, except it holds boost; also grips well.
If you're on a stock tranny, I can only recommend either of these two...with my preference going to the Clutchmaster Stage-III due to its smooth engagement and stock pedal feel. Some people like the hard pedal feel...more power to 'em.