IMO treat it as with any older used RV. Get the lowest price and be prepared to spend a bunch fixing it. Then hope that you come out ahead in the end money-wise after you get it good to go.
Back in 2001, Dutchmen 5ers had "issues" of whatever sort. We got a 2003 Komfort 5er and sneered at any Dutchmens. Fast forward to not long ago, and Keystone bought out both Komfort and Dutchmen, then proceeded to put both in the dumpster.
For a couple of years just before the end, Dutchmen Denalis were the same as a Komfort built in the same Komfort factory before it was shut down.