I bought the Sensenich GA prop on the last two RV’s I’ve had, which originally had the metal Sensenich fixed pitch. The problem was that even though they had the highest pitch that Sensenich sells, it wasn’t enough. They would both overspeed (well over 2700) the engine - as high as 3000 RPM at low altitude and wide open throttle. I didn’t want a prop shop to try to bend the metal prop to attain a good pitch. If you’ve ever seen how they do this, you would understand. My goal with my GA prop is to be able to use full power without overspeeding my O-360. I still get off the ground in about 350-450’ (640 msl, paved), have good climb rates, and get good cruise numbers. I can get 2700 RPM up to about 8-9000’. Max RPM drops off a little above 9000, but I’m seeing redline TAS in level flight at that altitude. I do have a relatively light RV6. I normally cruise at 65% power at those altitudes (245-2550 RPM, 20.5-21.5” MAP) and get around 170 KTAS, @ 7.8-8.0 gph.