I know it wasn't one of the choices but if the boat is rated for a 250 Pro XS get it. I really don't like to under power a boat. I have a 250 Pro XS on my Bullet which the Blazer is a lot like. If I had went with a smaller motor with the load I carry the hole shot would have been much slower. Not to mention what would happen when I fill the live well up with water and a couple of fish. Like someone else said, I have never thought for one second that I wish I had less power on the back. You don't have to press the pedal all the way to the floor. It gets great gas mileage because the motor isn't straining to run at above average speeds. I have owned 150 hp motors that got a lot worse mileage than my current motor because they were running wide open to reach my cruising speed. I cruise around at about 4500 rpms which is around 65 miles per hour on my boat. It is nice to know if I need more speed there is plenty left. Once in the past I under powered a boat and I will never make that mistake again. The only thing worse than paying for a new motor is paying for a new motor and being sick you didn't get more power. Just my honest opinion from my mistakes from the past. Good luck and see you on the water.