Few things about my experience with ACT:

1) I say if you got ACT get the heavy duty PP. The extreme PP has been known to break gears.
2) I have heard of one instance where the spring from an act clutch fell outta the hub and into the pressure plate. Didn't cause any damage but had to take the tranny off and stick in a new clutch.

Just a few things i've noticed, number two was probably an isolated incident. Other than that I think ACT clutches are pretty cool.

I like exedy too though. I think both brands are great.

Sorry my post was inconclusive.