Trouble is, your first class A is usually not the one you really want or need. Some recommend renting something to get a sense of what you're up against, but it's hard to find a class A rental. Some say buy something old and cheap and spent a couple of season in it weekend camping and longer trips. This is the route we took. Came out with a list of "must haves", "would be nice to haves" and "we don't needs" and then sold the old gasser for what we paid for it. This let us narrow down the search for specific models.
BTW there's nothing special about a gasser that will preclude it from breaking down in the middle of Wyoming.