Also, it's easy to overlook features that end up being quite important to some people. Two RVs might be very similar in construction and layout, but one of them could have very small holding tanks, or inadequate insulation for hot/cold climates. Some are wood framed with fiberglass bat insulation. Some are aluminum framed with solid foam insulation. Some of them sit very close to the ground, others have good clearance. No matter what brand you choose, go over it with a fine tooth comb. Potential water leaks on the roof and around fittings and cutouts (like windows and lights) are the bane of all RVs, and should be high on your list of scheduled preventive maintenance.