Which clutch is best, Borg and Beck or diaphragm?

I have always used a B&B on my 4 speed Mopars. A B&B can be rebuilt and you can change the pressure by changing the springs. A diaphragm style is a throw away. That said it is a lot easier on the leg. I've got a 3200 # in my Roadrunner and I love it. My GM buddies all run diaphram.