Donít know if this helps, because my boat is a cat (26í Daytona Eliminator, actual length 26í10Ē). The engine package is close, 377ís/ 320 HP each/ Bravo 1 drives/ props turning out. I have tried both the 24Ē Bravo One four blades (top speed 78), and the Mirage three blade, (top speed 84). The only other difference I can perceive is getting on plane. The Mirages blow out and have to be nursed onto plane. Not sure if trim tabs would fix that. Havenít done any testing in the mid range for speeds at RPM or acceleration Ė yet. But if there is a difference, I donít notice it. I am starting to think, the real difference is getting a prop shop to talk unemotionally about the three blade. Try Mark at BAM.