I am also in the buy used camp when it comes to luxury items like RV's. Especially on a trailer for weekend warriors. The only thing I wish to pay interest on is a mortgage on a house and even that kills me. Don't get me wrong, I start looking at new RV's and the drool hits the floor in seconds but I have to remind myself that there is a big difference between what I want and what I actually need. The major difference is about 80k in price. ;) Unfortunately for most of us, the only way to stay middle class these days is to owe nothing to nobody.
Be very patient and do your homework. Don't get attached to anything you see. There are thousands of options out there. Good luck and happy travels!