Sorry, I'm STILL trying to PICTURE MrMark off roading....:B:B:B...Dennis
All good answers so far. IMHO, look for floor plan first, quality a close second and anything else bringing up the rear. Whatever you choose will be fine for the use you describe. The suggestion of PPL Motorhomes web site is a good one. They have units for sale, mostly consignments, but the real value of their site is the floor plans they present. They also have a SOLD section that you can use to determine, in real world prices, what coaches are selling for.
As far as mfg go, look for a quality coach...especially if you're looking at 10+ yrs old. Don't worry if a company is no longer in business. Country Coach, Monaco, Fleetwood..all have changed hands over the past few years...they built some quality coaches and will still offer many years of excellent service. Look at the cabinets...are they put together with screws or staples? Fit and finish...does it look like they took pride in building the coach? Small things like faucets...plastic or metal?
The main differences between gassers and diesels are: Diesels are heavier so the ride is smoother. The diesel engine, (most often)is in the rear so you don't have any engine noise while driving and the generator is in the front, so no noise while you're sleeping. Gassers are cheaper in price but not necessarily cheaper in build quality. Choose what meets your needs best.
Finally, check the tire DATE CODES. MoHo tires age out at around 7 yrs max. regardless of tread depth. Six tires will run you about $4k so factor that into whatever offer you might make if the tires need replacing.
Here's some links..good luck and happy hunting...Dennis
PPL MotorhomesSOLD DieselsSOLD GassersTire Date Codes