Just like any thing you need to check it out thoroughly -- There is a good PDI in the documents section. Have them show you not only how to do something but then you do it .Also remember campers are made from products from many vendors like the refrigerator, water heater, furnace and so on just the box is from the manufacture and the final assembly. I tell folks that campers are like children most of the time there good but every now and again they act up. They need constant attention.
One of the biggest things is the dealer and there reputation. In my experience a mom and pop operation usually were best. And if it is new does not it mean will not have some problem. Bought a new 5th wheel and within 1 week the refrigerator quit. Called the dealer and they got me in the next day as we were leaving on a 2 week vacation. Ended up taking a refrigerator out of another camper so we could leave. Unfortunately they were bought out by the big one and now service really is bad.
Good luck with your purchase!
2009 Seville VF32KS
2019 GMC Sierra 3500HD Crew Cab Denali.
6.6 Diesel standard box.