I think some RV manufacturers, have a low end line, mid, and upper end. After owning several TTs, I bought my first FW in 1995. I was looking at a used upper end 92, and a new 95 low end model, made by the same company. They were about the same price. I bought the used 92, from someone I knew, as the quality difference was very visible.
The new one was needing repair, just to get the door open! The sales guy needed to pry on it, before we could look at it. Once inside, a cupboard door came off, when he showed us all the storage space. Then we noticed the cheap kitchen sink was cracked open, about an 1/8 inch. We walked/ran away from that low end trailer, and bought the used upper end one.
Used that one for many years, with only a few small issues.
It seems the Montana, has a pretty good overall rep.
Jerry