We had a 38 ft Montana weighing 15,500 lbs. The only real problem we had was the suspension isn't heavy enough for the trailer even with the wet bolt system. The bushings are too thin to start off with and we bent the axles twice. After that we upgraded it to IS Suspension and Disc Brakes and that sure made a different animal out of it.
That being said Montana will not speck one out that way. So if you have to spend an additional $6,000.00 I would price a Big Sky because they offer those most important options on the Big Sky. Speaking from first hand experience.