I would think long and hard before buying any rv. They are all built lightweight and kinda inexpensively for the weight with hauling factors.
There is no comparison between a boat and a fiberglass camper as the boat is built for seaworthiness with molded in or integrated fiberglass bulkheads, stringers and additional structural members.
A camper on the other hand is limited by weight so there is a limit to adding a lot of engineered structure. I've experienced failures with both northern lite and Bigfoot campers but the failures so far as I can tell are few and are between the 2000 and 2009 models. When they were a bit too concerned about weight factors.
My 03 had a lot of problems, when new, with leaks at the compartments and ABS waste lines. When I saw the work I declined any warrantee work and repaired everything myself.
Therefore the advice about getting a great deal on a lightly used model and upgrading is your best bet. I would never pay the full new price for one as I am too pickey to expect any decent return on a new one.
I feel that any knowledgeable skilled craftsman would readily recognize the need for upgrading and refitting a camper to his specs after getting to know the camper. Buying new is not a panacea and warrantee work at the dealer was not worth the business of dropping it off and then picking it up again.
Just get a nice used one and watch for any stains, water inside compartments, wetness, mold smells and don't stop this practice with any rv and you will be okay. Don't store it out in the open when you cannot keep an eye on it after each storm and make sure you can work on it regularly at a comfortable place and pace. HOAs that have rules about rvs can be bad since you cannot keep a close eye on leaks and moisture levels.