Take flashlight on look in the back of cabinets, pull drawers, etc to see how they are really built. Is wiring and plumbing neat and secured. Cabinets should be screwed and glued and not stapled together.
Look beyond the glitz and bling. These are not a sign of quality, just used to pull your eye away from the poor construction.
Look at DRV and Arctic Fox. I would stay away from Thor products although they have gotten better over that last few years. Thor has bought DRV and Jayco this year, so they have not had time to get into their business and make them cheaper.
Ken