Couple other thoughts
A quality built unit can outlive you. The only thing you might be changing is carpet, fabric or fixtures just to keep it modern.
To throw out some names, I would look at Carriage, DRV, NU WA (we liked the Champagne). Holiday Rambler (Presidental was our pick) Newmar (Torrey Pine also our pick) Excel, Teton, King of the Road, New Horizon, Avion (Avions have not been built in a while but were very good quality)
Then of course some of those above are still manufactured but for older ones this is a start.
Some places have age restriction on unit you bring in. If older than 10 yrs old you may have to supply a picture to get approval.
Most of the quality built rigs I have seen, that have been kept clean would not have any problem IMO to get approved getting in. And I do believe a quality built unit is also easier to maintain looking good and operational. Again just my 2 cents from the 35 years of ownership.
06 King of the Road 37RLQS
06 Coachman Cross Country 5.9L 300HP 382 DS
03 Jeep Wrangler, 4.0L James, Trina, SMSgt, USAF Ret