OK jarjar, I'll buy that.
I have sometimes been misunderstood by trying to represent 10 pages of theory in only a few lines of text here.
enicalyth raised another important subject, especially for aerobatic aeroplanes. A composite 3 blade prop has much lower polar moment of inertia than a 2 blade metal one. A lot easier on the crankshaft flange when doing lomcevaks, flat spins and snap rolls. At least double the price though.