We're going to upgrade from a 21' camper van to a 24' something in the coming months. I've had my eye on a View or Navion. Went to an RV show this weekend and the Camping World rep advised that we'd get a better deal buying a gasser even though I could expect only 10 mpg versus 17 mph for a diesel. Said that, due to new requirements from Mercedes, Mercedes based diesels must be serviced ONLY by Mercedes dealers - can't be serviced by Freightliner or any other shop that handles diesels. Anyone heard of this? Also, since we're now looking at gassers, I've noticed that the fit and finish of several show room models (Four Winds especially) are much less than what I'd expected from a new unit. Does it seem to be true that the diesels seem to be built better than the gassers? Any recommendations of 24' gassers to look into or to avoid? We're in our 60s so expect this to be our last RVd and hope to keep it on the road for 10-15 yrs. Thanks for any recommendations and responses.