Yep I have fulltimed in 3 of them a 2003,a 2012 and my 2015 and I'm telling ya I myself have not seen any fall off in build quality ,like TAKPAK said before better insulation,12in frame ,better wood,Better electronics, better Gelcoat and graphics better EVERYTHING (EXCEPT the Mattress)
I would be willing to bet if you look in the archives on this Forum over the years you will find just as many complaints from folks that have got a lemon or other bad problems and I feel for folks like Virginia,Rich,etc.. and that SUCKS but for me and my wife we have been very happy Or Maybe the Luckiest Monty owners on Earth