Ram tells you what the characteristics are and you get to live with what you pick. My experience with Ram is excellent. As they suggest, use with steel billet flywheel for hd use.
maybe its the place where you are getting the clutches installed... I have a king cobra clutch, and have had it for about 20k miles now, and i'm very happy with it... no slop, its seems very strong, and you can definitely feel where it will engage every single time. My only complaint is that the clutch pedal is now very heavy, but i have become so used to it that it is no longer an issue. Now I obviously don't have tremendous power going through this clutch (See sig.), but I'm impressed thus far.