Ive found with RV's its a get-what-you-pay-for kinda thing. I had an RV before i even had my own house/apartment. I was living with my parents in my early 20's and bought one to go racing/riding. Love RV's.
On my 3rd now, and since i went the MD truck based route (Freighliner M2) im very happy. Quality on my Dynamax is pretty good, but still...i can see where it could be better, but then they would have to charge 100K more.
We had a discussion on the dynamax forum about things like this. And even the MFG said themself, "yes we could make X Y and Z way higher quality, but then the price would go up 100K and no one would want to pay for it".
Personally ill never go away from a Truck based unit ever. Never, EVER, overheats, i can tow 20K, etc. Same with the all-electric and diesel fired heat. No dealing with propane issues.
The Class A's are just plywood and drywall screws with fiberglass over them to look pretty. Now, if your living in it for 6 months at a time in a location, then those would work better. But for most of us driving and towing all the time, cant beat a truck based unit.
My next unit will be full HD truck, Freightliner Cascadia based or similar.
--John