Dan - Your summary seems about right from the reading I've done as well. One other item I can add about the MaxProp . . .
The MaxProp on my boat was corroded because the zinc was allowed to be completely consumed. In addition, the prop was a little oversized for the boat and was not allowing the engine to reach its proper full RPM (this was observed in the survey when I purchased the boat). Adjusting the pitch was not sufficient to overcome the problem in my case. The prop was sent back to PYI for refurbishing, and they were able to reduce the prop diameter, polish it back to like-new condition, lube it, etc.. PYI was very knowledgeable about the use of their product in a wide range of circumstances, and was very customer focused. It was nice experiencing such competent and truly helpful support from the vendor.
Here are the before - after pic's . . .