Hi guys; I have a friend who is looking for a trailer or 5th wheel that he is going to leave it in Parker, Az. He'll live in it during the winter for about 4 months and the rest of the year it will be stored down there. I have given him my thoughts but wanted to get yours. He wants to spend in the 20k range so it should be older but with one or two slides. What are the better ones and the ones he wants to stay away from. Plus I was wondering about the heat with an rv being stored during the summer. Are there some hints to what to do during that time? Thanks for your help. Brett