Fastest prop on my boat was a predator, that being said theres a reason theyre no longer in business.. Welded ears not cast, theyre notorious for throwing blades. Second problem with them is the hub housing, its very thin and is prone to cracking, I just had my three blade predator in the shop for a new hub and the housing cracked when they were pressing out the old hub. I personally wont own another, not worth all of the unknown variables associated with a 20 yr old prop. If youre looking for a four blade prop try out a Trophy plus way stronger than any predator and you should see similar performance with it just my .02 cents