One must be handy at fixing things to own a RV IMHO. They are hand built and no two are the same while being prone to problems. The quality of items like electrical, plumping, suspension parts, tires, hydrolics, intertainment systems, frame, construction materials and etc that a manufacturer choses is important for the long run. Too many manufactures use minimum quality to cut price and adhere to established federal and other standards. To determine the quality of those items requires a lot of home work that most people are not willing to do and are at the mercy of the manufacturer.
I found that manufacturers that wire and plumb their trailers using neat orderly methods that exceeds standards is good place to start and shows up in quality in other areas as well. That demonstrates they care about the long term use of that RV. Of course those RVs cost a little more but pay off in the long run.