Wood or composite prop?
Generally wood props are cheaper, but the pitch cannot be adjusted after the prop is purchased. Composite props cost more, but have adjustable pitch blocks that can be traded out if the fan pushes too fast at idle speed. Also think about where your boat is stored. If it is stored outside in the rain, then the wood prop will rot out, basically because it is wood. Yes you can get a coating on the wood, but expect it to have a shorter life than a composite. It is generally thought that wood props are quieter than composite props, but composite push better..