Clutch question, Diaphragm versus Borg and beck, who has swapped to a diaphragm and do you like it

In the early/ mid 70's I swapped a low miles 340 into my what had been 70 440-6 RR. I don't remember why, but I stuck a PP in there out of a 70's Corvette, 10 1/2" I liked it a lot, and remember, that RR with a 3.54 was a lot heavier "load" than an A body.