Down here at sea level in Houston. 90 degrees and 100% humidity that is what I got for RPM's.
DLE-55, Bowman ring, reed block mod, Stock muffler.
Falcon Wood 23X8 6850 RPM static on the ground
Falcon 23X9 6700 Static
Is it the best hover only prop? -- NO, the 23X8 yeilds more instant power. However it is a very good balanced prop that allows for more high energy fun.
I would say the loss in instant power is small, but the increase in top end is easily noticed.
I am flying an 18 lb pilot extra 330 around, the airplane would need a da60 to be a rocket.