I have a friend that is into buying, fixing and reselling boats and he has an 06 champion 198 with a 225 proxs on it. I don't really want a payment, but if the difference in gas and oil is significant I might try and jump on it just to save some gas. If I can get him down enough to keep my payments around 150$, but save 100$ a month in gas and oil it might be worth it to me. So can anyone give a good comparison of the fuel/oil consumption between a proxs and a 175 EFI.