Whatever you end up deciding on, be very, very, VERY thorough in your own walk-through and inspection no matter how much BS the sales person gives you about how good they are. This includes all the exterior and interior lights, slides both out and in and whatever else you can. Do this BEFORE you sign anything or hand over any money. Next, DON'T drive off the lot before you have them put some water in the fresh tank and make certain all the plumbing works and there's no leaks (including grey & black valves). Ditto at least one full propane tank and check the hot water heater, furnace & stove/oven. Once you've driven off, whatever you find can be blamed on road damage - and yes, I've heard of this happening.