Bit of a long video but covers the typical operation of
Subaru engines with many useful insights I think. Caleb's comments
are pretty realistic- covers the good and not so good points of the
installation fairly in my view.
Quinti is
basically gone now by recent accounts so no useful or reasonably
priced support any more. Your choices are down to IVO, MT and
Airmaster. I'd be looking at Airmaster given the price of MT stuff
these days.
http://www.airmasterpropellers.com/products
They are in NZ and have a good reputation for service from people
I've talked to. Some of their
props use
Whirlwind and Sensenich blades.