I purchased a 2016 Grand Design Reflections 313RLTS. It's the make, model, floor plan, size, and even color that we wanted. It is in near-showroom shape (front cap has some scuffs from run in with some tree branches). Other than that it's great. I went over it with a fine tooth comb one Sunday at the dealership. Even brought my own Sherline tongue weight scale to verify numbers. There wasn't a thing wrong with it. The trailer must have been built on a Tuesday or a Wednesday because everything fits, works, slides, stops, rolls, and squats just like it's supposed to.
And I saved $21,000 by buying it instead of new. I bought it for $29,000 +++
Now the ones that might have been built on a Monday morning or a Friday afternoon may have been another story altogether, but this one of mine is built perfect.
My point is it all comes down not just to the company, but the pride in workmanship of the person signing off on that QA slip.