I use alot of the MAS props on all my planes engines, there 3blade is pretty tough and doesn't break that easaly.
as for a OS 46 spinning a 11"prop perfect size for the fx-AX46's,for my OS61fx a 13X4to13-8.
for my 91 4stroke's I like the MAS 14-6 or 14-8 the only gripe with MAS is when they spin up they are noisy and they also tend to flatten out but they sure do last and can take some abuse where a APC will snap and wood will splinter to bits