I posted this awhile back:

All results on Wildcat Curtis Youngblood mix 30/23 (sea-level):

14x5N 11,180RPM (richened a lot to bring it down to 10,800 peak). Absolutely incredible throttle response with good airspeed and thrust. This is the my prop of choice my CG Matrix. Rock solid harriers with this prop but hover pullout is is mediocre.

14x4W 10,750RPM Stump pulling thrust with good spool up. Excellent braking in downlines but airspeed is low for my taste. Doesn't seem to rip out of a hover due to the low prop speed.

14x6 MA K-series 10,600RPM Excellent balance of thrust, airspeed, response and the best fuel economy. Great hover pullout and waterfalls. And they're cheap!!!