I have a Mission single enclosed, bought it new for $3,200 5 years ago and have pulled it all over the northeast US and Ontario. It's holding up nicely, the only thing I've replaced is a led tail light(damaged filled with water), both fender led lights(wires rotted off the bulbs) and a lift cyl for the front access door.
All common stuff on all trailers I believe.
The only thing I would want if I ever get a new trailer would be a galvanized torsion axle, keeping this regular one is a chore to keep rust free...I'm slowly losing that battle, but it should hold up for 5+ more years safely.
Alcom builds over a half dozen other brands including Triton and all of them are about the same for hinges, latches and materials. I always admired Tritons wiring harnesses but on an enclosed trailer 95% of the wiring is inside out of the elements. My 2bits, good luck OP.