presently on current models Puma FTD, Puma, Cougar FTD, Cougar Adv, and Pll these boats are running the Fury prop. The biggest change has been hole shot and mid range punch with no loss of top end and most the time an increase on top end. The fury prop is a harder material smaller dia, with more blade surface, and lighter. We have found that if you are a little slow out of the hole the fury pitch for pitch is faster out of the hole. The fury with the large blade surface handle like a four blade but faster. Loading the boat on the trailer is even better more um for the money to get to the roller. like the hair do conan 1