No matter, cars, boats or RVs. Never buy from the first model year. It might have looked good on the CAD but it is full of design bugs which get worked out in following years of that model.
Now, when it comes to quality control from the builder I do believe that for the most part you get what you pay for. Don't expect a 4 star trailer at a 2 star price.
The way some of them are built it is a wonder that they hold together hurtling down the road in what amounts to being stationary in a cat 1 hurricane during an earthquake, but they do.