Yeah the bigger ones will end up the same way after you put some miles on em.. the mass market builds really are garbage builds, they hardly stay together for people who use em once or twice every few years.. I hadda live full time out of a mass market camper once (tornado took our house out), was a pretty nice one we took out twice a year before we lived full time in it.. after 6mo of living in it, everything was falling apart.
I like torsion axles, there's a bunch of fud out there about em failing in the baha races due to sand contamination and stuff, but seriously you taking yours out for dune racing? I think if you have any kinda cargo hauler type design they are super nice since they ride great if the trailer is both empty and loaded.. Tandem Torsions are really nice offroad and on washboards with 4 indy wheels, single torsions the dampening is not used as much since it pivots on the hitch but still having shock absorbing is a very nice thing to have when towing on rough terrain, I would put Single Torsion and Leafs + Shocks about on equal playing field.. Torsion has the clearance advantage, but the leafs would be winning in simplicity, field repairability and cost.. and only since small trailers CAN go places big tandems simply cannot.
Nobo's seem like they were designed more for pulling behind mall crawlers than actual ExPo/Overlanding use.. I'm sure they are quite fine if you just take em to RV parks a few times a year, and the price reflects that.