I rate them at the top of the pack in the category of "volume builders." Their design, materials, and techniques are all "above average" but I believe what might start out as an "intangible" puts them in the lead. It's SUPPORT. You can look up a Parts List. You can look up a Wiring Diagram and the wiring is actually where the Diagram says it is. If you want the wiring harness you can order it. If they don't have a certain cabinet door they'll make it.
From what I can tell, they may have cheapened parts of their product line. That roof is still fiberglass but some models seem to have lost their end caps, for example.
From a site promoting AZDEL for walls, Winnebago is using AZDEL in the walls of their A and C coaches. That's another plus.
