I purchased the Power/Thrust model proppeller after reading several reviews on line. And I am experiencing all the benefits. I think Honda should make this the base propeller. Reverse is easily 50% more powerful with smooth acceleration and steering control. In forward I've noticed a little better low end control and slightly stronger top end. I have not run the prop enough to speak about the fuel efficiency gains, but performance is vastly improved.
Black Bear is a great supplier and I received the package sooner than anticipated.
WOW - What a possitive difference. 
