Along this same line... consider, 1998 NuWa 38' Champagne, bought new, ordered with numerous changes. Over the years, installed Mor/ryde IS first year, installed solar/inverter 2nd year. Over time,have replaced WH, AC (2), W/D, fresh water tank, fridge, went household, 1 window, faucets, toilets(2), slide wipers, both propane tanks, pigtails and regulator, 2 valves(sewer). Replaced awning last year with auto. Recoated roof with Liquid rubber, oh, repaired Fantastic Fan twice.
Still has same brakes (tow is MDT w/ exhaust brake). Probable anal about maintenance, constantly checking caulk, tires, lights, etc. Trailer still looks good in and out.
Lesson, towables will survive with care.
Jim