[Eagleback]

First if you think about fuel mileage then its going to be disappointing no matter what you tow. 9 to 14 MPG reported as for state parks and campgrounds 30 or 50 amp the later being more harder to get as they have less availability expecally in summer in the north. Smaller 5vers have 30 or 50 amp service. i live full time in mine so 50 amp is a must. 1 ton can pull just about anything so i would make a list and go with what you need in a 5ver and what you can live with out and that will make your decision before any thing else. as you mentioned you were worried about state parks and campground in the beginning.