Help in Buying Used Class C

Thanks everyone for the good advice. In terms of pre-purchase I was going to have a local RV repair shop do an inspection. Besides water marks which sounds like should run from. Any other things (engine, electrical, etc) that would get away from fast?

Thanks for the Winnebago rec. I'll look into the 25b. Any particular manufactures should stay away from. In this price point I'm generally seeing Tioga, Fleetwood, Coachman, Itasca, few others. Having a hard time knowing if the manufacturer matters or more of an RV by RV thing.