In my opinion it depends on the size & weight. For me anything over 32-34' would have to be diesel due to power & fuel economy. Today's motorhomes seem to have 2 choices of power train, #1 Ford V10, #2 Ford V10, they are powerful & very thirsty. The diesel will get 10-15% better fuel mileage & I'd guess 20-50% more horsepower which if traveling in the mountains will make a very noticeable difference not to mention have an exhaust brake for the downgrades. And you wouldn't have as many limitations on what you tow behind it, unless it was extremely heavy you would never know it was back there & neither would the fuel mileage. Others will argue the maintenance & fuel cost, but both would be offset by the difference in fuel mileage, plus you go from 3-5k mile oil changes to 7.5-10k or once a year. It will always fit in a truck stop fuel lane & not have to pick & choose where to fill up.
As I said, just my .02 cents.
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Fulltimed 10+ years
Sold '13 Thor Redwood 36 FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
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