There are a few around here too, but not very many. Mostly Featherlite and Wilson for ranch/livestock trailers. So what does that tell you?
I know years back Duralite was cheaper but didn't hold up. Not sure how they are now though.
Have only seen 1 Duralite and the guy said it was good thus far but only had a few trips with it. We bought a Hot Shot by Trails West. Corrugated steel, light like aluminum, pulls really nice. Had it 4 years, lots of miles through the mountains between AB & BC, really happy with it. Nice latches, paint holding up well, no wiring issues, etc.