Most RVs are roughly the same. They all use the same appliances, electrical components, plumbing fixtures and systems, etc. Most are assembled with little thought to quality control. So, it is on the buyer to inspect carefully the unit they are purchasing, and get the dealer to fix all the factory screwups before taking delivery.
An alternative is to find a lightly used TT a couple years old. The bugs are worked out, and the depreciation hit has been taken by the original buyer.
The main thing to look for is 1) can your vehicle pull the RV comfortably and 2) does the floorplan work for you. The best place to see lots of floorplans is at an RV show.