Its going to be more subjective to whats important to you, how you load the boat, the conditions you run in, etc... I got better performance top speed and efficiency out of the mirage plus. I got a better feel out of the Rev 4. So i ended up with the Rev 4. I would imagine if you started with a 19 pitch you would be close then you can dial it in from there. The large diameter props will give you worse mileage than a smaller one but will help if you push a heavy load. If you feel that the boat is stern heavy and your tabs dont do enough a 4 blade will help lift. I have only personally tried the Mercury props and ken at propgods is good to work with and you can send them back for $35. But i know dale and a few others have tried Powertech.
