I am one that generally will avoid the Master props and tend to use more APC (landing products) than anything else along with some wood props on vintage stuff. This primarily because I believe in many cases, even the majority that the APC performs just a tad better for me.

The APC is much stiffer than the Masters and that flexibility of the Master product does rob power, of couse if you have lots of prop strikes the Masters often will survive where the APC will break. If one wears safety glasses and stands back in line with the propeller tip path plain and have someone open the throttle from idle, The amount of forward bending Is almost shocking and guess what, it takes power to do all this bending.

Its just what works for me

John

Some complain of the APC's sharp edges, well over the years I have seen about the same amont of blood and gore with both brands.