The 'sleeper' wood prop is..Sensenich. I once had a 160 HP RV-4 with a Bernie Warnke (Catto is the modern day Warnke) prop that was crazy fast. Nothing special in the cleanup/cooling drag dept, and it was an honest 195 mph cruise a/c. The prop got broken and I never got the speed back with any other prop. I sold the plane, and the new owner later broke its current prop. He replaced it with a wood Sensenich, and it was just as fast as it was with the Warnke. The kicker is the price. Not as cheap as a Sterba, but about half the price of a Catto.