Want to buy a new rig but afraid of quality control issues

Just buy from a good dealer and do a REALLY good PDI ,ANY brand can have a lemon come out of the factory sometimes it is a **** shoot ,I have owned 3 Montana's and all have been good 5er's with minimal problems But I have talked to folks that have had a lemon Montana as well,we almost bought a Jayco Pinnacle 3 years ago and really liked them but just got a better deal on the Montana and I Liked my Dealer or else I would have bought the Jayco no problem