Our previous trailer (Jayco JayFeather LGT 29N) had torsion axles, and we liked them. Fewer parts than conventional suspension - not as much to wear, break, or come loose. They seemed to give a nice ride. They let the trailer sit low to the ground meant only one step to up into it, and probably added to good aerodynamics. Downside was it was difficult to work underneath, and had to watch out for steep driveways.
What I would be more concerned about are the 14" Load Range C tires, which I would consider marginal for that weight trailer. As far as I know there are only two manufacturers of 14" Load Range D tires - Kuhmo and Kenda - so upgrade options are limited.
I would get the dealer to upgrade the tires to Load Range D Tires(65psi) and wheels to take the higher pressure (if the existing wheels aren't rated high enough)
