I've been looking at family cruising/fishing boats big enough for a family of 5 to spend a weekend (or more) out on the chuck. Most of the boats I've been looking at have the option of both gas and diesel power. My question is, what's the best way to go? You can generally count on around 25% more for a diesel as compared to going with gas but is the payback worth it? You can buy a lot of extra gas for the 20-30K that diesel is going to cost you. And what about maintenance? When it comes to trucks the cost of gas vs diesel repair is not even close. Same with boats? I run a long way every weekend (100-120 miles) so should this play into the decision? I need a boat that will cruise @ 20+mph so something like the Commander 30 is what I'm looking at. Is there something else I should be looking at? My kids are young (6 And under) and we have outgrown my 20ft aluminum. Once I pull the trigger I'll hopefully be keeping the boat for the next 20 years so should this be a factor on gas vs diesel? Let me know what you think. Thanks!