I am considering moving to a outdrive, and was wondering the difference between bravo 1-2-3. My H.P should be about 450 to 700. I am just looking for info to decide what I want to move into considering a 21 to 22 foot boat.Right now I am looking at 496 to 502. I know this is a pretty wide spectrum but basically a nice little family boat that will run 70 or so. Any info would be appreciatedI'm thinking Bravo 1 is your best bet.