To be honest I have the 8.1L and it sucks the gas but really i have so much power and I love it. Yes my wallet is very thin now but it is so worth it. like in previous comments its better to have more power then not enough. and if you weight down the boat the 8.1L will still have no problem getting on plane. I run 3700LBS when we wakeboard and it will get up to 24.7 faster than any boat out on the water with weight! But one other thing remember you are buying a B.O.A.T Bust out another thousand.