Been the gas route vs Diesel. Have owned both....If it was me, I'd be looking at a nice used Disel Pusher. I would never buy a new RV.........to many problems the first year plus you take a HUGE hit on depreciation. You can buy a nice used Diesel for the same amount or even less...........diesels don't have the noise of a gas and they ride so much nicer. My suggestion before you buy is to drive both........and not around the block, but take them out on the freeway and if possible over so steep grades. Just my thoughts, been there done that. Good Luck.