The Montana is no better no worse that any other brand in the price range. The build quality like the build quality across the RV industry is not number one.
we are on our second Montana but not without problems. If you look at different forums reporting trouble with their 5th wheels you will see the same issues on all of them. We have seen bad decals on all brands of 5th wheels. there have been over 65K Montana's built since 1999 so there are a lot of them out there. We use our Montana hard and although I am quick to report all problems large and small the Montana has served us well.