If I were buying used I would have a professional RV inspector look at if for me.
Also buying used I would go Winnebago. They make almost all of the bid items themselves, so you can replace item on older units.
I have owned both Winnebago and Thor. Hands down Winnebago better unit.
I will say the Thor Vegas that I have (2018 - 27.7) gives a lot for the small buck.
I would never go back to a big box class A. The E450 chassis is great.
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