It seems more and more people are going for smaller lighter rigs these days. Getting a 42 foot rig 15 years old, and expecting to sell it again in five years is a bit of a gamble. Even expecting to want it for five years is too.
Certainly Tiffins with big powerful engines are lovely rigs though. They really are made to cruise effortlessly down and up the roads with heavy tows behind. Gassers can tow too, but you will really notice the difference.
My estimate, diesel will cost $2700 a year, gas unit $1800 a year. Depreciation will be similar, $2000 per year.
Ease of ownership.. one is likely to be driven to destination, long stays. The other will like shorter trips, easier to pull over and view the sights.
Chance of a big bill? A bit more likely with the diesel IMHO.
That's my estimation only, from reading this forum for ten years or so.
