As far as entry level is concerned, among the main stream manufacturers, the entry level TTs I have seen did not have valances over the windows and doors, did not have cabinets, closets or storage above the bed, did not have the same amount of insulation, had press board everything and sometimes curtains instead of doors.
Those were the things I noticed that were added as the price went up. Even within the same brand the are more bells and whistles. Bigger televisions, fireplaces, lazy-boy type recliners and far more LED light strips.
Some might call this fluff, others consider it creature comforts.
Among the mainstream makers, the construction methods and materials vary but the overall quality seems the same. It could be better but it is sufficient for the majority of the TT users. They sell all they make.
As for construction, Airstream's aluminum tube, Casita, Bigfoot and the other shell-type TTs, Artic Fox, Nash, Lance to name a few; seem to get the best reviews. These makers have broken off from the herd and developed unique or improved construction materials or practices. This is reflected in their premium price.
There are three thing that have to come together for a proper TT choice. 1, cost. it should not be a undue burden on the budget, 2. Tow vehicle capacity. You need enough cargo capacity hold your family, gear and the tongue weight of the loaded for the road TT. 3. Floor plan. The floor plan remain when all else is accepted or forgotten.
If you are not sure, rent what you want and find out, before you spend the big bucks.
Good luck
