Here's my two cents....
Our 23 ft TT and our current 38ft 5th wheel were both considered mid level quality. We didn't know that when we bought them. We based our decision on price, floorplan, features and look. Both had cabinets that were made from luan panels with solid wood doors and drawer fronts. The luan had a vinyl Wood Look coating. The overall appearance gave the look of solid woood cabinets. This provided a high end look for each of the interiors if you didn't do a close inspection.
As it turned out both trailers gave us long service with no more than "what you would expect" problems. We sold the TT after 16 years and our 5th wheel is still going strong at 19 years. Both were used at least once per month for weekend trips and one or two long trips each year.
So my advice is to look for something you like, that fits your needs and if the online testimonials don't show any major issues...buy it.