Ive had CF dual friction, CF DFX, and a powergrip.
I liked my dual friction. It held 440 ft lbs of torque. The DFX was too agressive. I wouldnt reccomend that for the street.
The Ram powergrip i have now is the best clutch. The pedal effort isnt bad, you definitly know its there. The clutch has stood up to some pretty hard launches, and a few good wheelies and it still holds strong.
I think your problem with clutches is you keep buying entry level ish stuff. Go with a dual friction, powergrip, or powergrip HD.
Dont go too agressive with it cause the clutch is the fuse for the transmission. To agressive and you are gonna break the trans