IMO, there are NO mass-produced RV's worthy of a 'gold standard' designation. Everything is pretty much built from relatively low quality components -- enough to get the job done, but nothing ever over-the-top. And of course, we as Americans, are not going to pay the price for an RV that might truly be the gold standard, because there's too much other stuff on the market that, on the surface, looks just fine and will serve our needs until something goes wrong or falls apart due to the materials and workmanship we've settled for --- then we can get on this forum and bellyache about it! :C
Happy travels!