Ranger Smith,
I, too like the Tiffin brand, but a used MH whose builder went out of business means little, or nothing in the selection. Up to the buyer,m of course, but very little on a MH is proprietary. Chassis is Ford/Chevy, fridge is Norcold/Dometic, generator is Onan/Generac, etc.
National made very high quality RVs, many of which are still motoring nicely down the road today!
I still say, floorplan, amenities and condition are as important as who made it. Certainly, Tiffin is one of thew more highy rated brands, there are thousands of older, orphan rigs on the road.
Just my 2c....
Happy Trails!
Darryl