Like FW28z, we purchased our 2013 31F Four Winds used with very few miles on it.The purchase price was less than book value, perhaps a consumer discontent driven phenomenon. At any rate, we've had very few problems with our MH so far. The slides work; the coach body is good; the E450 Ford seems durable and strong; etc.
Our dealer, Crown RV of Conyers, GA is decent and as honest as they come, I think. We've had one issue with Thor that speaks of incompetence, however, and that is our request to have a full length outer slide seal set to us. So far Thor has sent two different and totally wrong rubber seals, despite Crown RV's attempt to help us. I think Crown RV even sent Thor a cross section view of what the outer slide seal was supposed to look like. IMO, it's hard to justify such incompetence on the part of any employee or company. There simply isn't any explanation that I can come up with other than employee incompetence or deliberate wrongdoing. Clearly Thor needs better management and employees if it is to survive.