I currently fly behind a 78x48" Prince, fixed pitch prop. The takeoff and climb performance are stellar. I give up speed at the top end however.

On a "standard" day, solo with half fuel, I can see 200' takeoff and 2000 fpm climb from my 1500' AGL home field. That same day I will see 110 mph at 5800 rpm.

The guys running the "Luga" ground adjustable props claim similar takeoff and climb, with better top end. I can not confirm or deny this.

If I were to be replacing my prop today, it would be a Luga.