I am getting ready to order a new 20' pontoon boat with the 27'' toon upgrade and I am undecided on whether to have a yamaha 90hp(EFI) or a yamaha 115hp(EFI)put on it.The 115hp is an additional cost of $1850.00(including tax).I just sold a 2001 20' pontoon that had a honda 90hp(carb)on it with...