They really are. I think the 2 big ones, WW and Sensinich are really close in performance, but the Sensenich wins hands down for ease of pitch changes.
FWIW, the pitch pins that come with it are in 2" increments. My 160 doesn't like anything over 38 (that's only if I want to go faster but not get off the ground quick). I took the 40 size pin and turned it down to 35 and that really seems to be the sweet spot for the 150/160 HP engines. Still faster in cruise than the 82/44 borer but gets me off the ground MUCH quicker. We have tested it on A LOT of different planes now and ALL have shown a major improvement over the Borer prop (not to mention its 12 pounds lighter and the throttle response is instantaneous)!
When playing with the prop, CHECK YOUR TACH!!! None of the mechanical tachs we have tested were even close. Typically they have been 150-225 RPM off on the top end so the guys that thought they were turning 2700 on take off (like me) were only getting 2475-2550. I was really wondering why I was cruising so slow at 2450 (turns out I was only turning 2250). Optical tachs are cheap and my new digital tach reads within a few RPM of the optical tach now.