Edit... me again..
There are no "bad" brands of RV 'out there.' A pop-up is not any worse than a 40 foot motor home diesel pusher. Every camper is great! But you've also got to remember, different campers are made for different purposes and types of use. If miss used, even the most expensive camper will not last. And be prepared for one other thing, they do require constant attention, maintenance, and upkeep. If you do not take care of it, it will be a piece of junk within a year. Don't abuse it once you have it. It takes work and sometimes money, to keep them nice. Unfortunately, there's no short cut there. Be prepared for a life-style change!