I bought one of these, and am getting delivery of it in January. Happier Camper HC1.

Very different from the others posted here. Some pros are:

-Sleeps 4, unlike most teardrop-style off road trailers. I have a kid, so could not do a 2-person set up.

-Super lightweight fiberglass (about 1500 lbs unloaded) which means you can haul anywhere. Way lighter than any other camper of similar size on the market.

-Modular inside means you can empty all the interior and fill with gear, dirt bike, toys, etc. if you want.

-Has lifted option with A/T tires, and options for off-grid solar inverter, A/C etc.

The cons are:

-Not nearly as rugged as many of the all-steel off-road trailers out there. Good luck pulling this down a really narrow trail, as it is 7' wide.

-No way to make this work with a roof-top tent -- you are going to be sleeping inside this trailer.

-It's expensive, starting around $25k and going way up with options from there.

-They have an insane waiting list on new orders. I waited around 1.5 years.