On Ranger boats like that we've had the most success with the Turbo Lightning props when we're looking for top speed. The merc Hi-Five wasn't known for a lot of lift or top end speed. When we're after all around use we go with the Turbo Ultima 4. Great holeshot, great mid range and carrying ability. But for top end only we look at the Lightning. Still a good holeshot, great lift and top end.