Diaphragm versus spring clutches

["Jack I. Brooks" <brooks@belcotech.com>]

Can anyone compare the clutch action and engagement differences on the
TR2-4 and TR4A-6 clutches.

I am looking at the benefits of installing a diaphragm (TR4A-6) clutch in
my TR3A.  The swap is not difficult, I believe the only differences are the
pressure plate mounting hole location and the release bearing sleeve length.

Is one easier to engage well, easier to compress, stronger?  What are the
major differences you see/feel from the drivers seat?

Thanks,

Jack