One quibble about a prop factor that has appeared in this (and the majority of previous) prop thread:
Comments about gains in speed with the "new" prop. This seems to happen with any change, whether a different fixed, feathering, or folding prop.
Remember.... IF the pitch is optimum for your particular boat, you will motor at an optimum speed.
Your boat has a potential speed under power - presuming flat water and a clean bottom - and most (!) boats do not have the correct pitch prop installed when new. Oh, it may be close, but the factory first looks to their wholesale price and then spec's out a prop for a given family of similar-length designs. Then they (typically) offer different keels.
I have documented our progress over many years to get to the best sustainable speed under power, over on the EY.o site. I have used a fixed 2 blade, a feathering two blade for a decade, and after some careful fitting the 3 blade fixed we have now. We were never slow, motoring along at 6.5 kts..... but with the three blade we motor at 7 kts all day long.
While it's axiomatic that we are fast under sail, we have to also do a lot of miles - sometimes all day- in the NW under power. I dislike the loss of a knot under sail, but would hate to give up any forward power when going up the WA coast against the summer winds, or down the Columbia River 90 miles to Astoria in no wind.
So, whatever type of prop you go with, always be sure that it really gives you all the speed you are entitled to.
Remember that pitch is important, but so is total blade area, and so is shape.
Finding the pitch is part science.... and part learned intuition. That's my opinion, and worth about $.02 on a good day.