The Twist tr7 made by micro-light trailers, elkhart indiana, is at the top of my list. 450 pounds. Can be pulled by a motorcycle (tr7 is the name of a big bike). I'll use a small car, though.
I would consider the Armadillo Vaquero, but Armadillo Teardrops has disappeared off the internet---don't know what is up with that. Phone number doesn't work either.
I had considered the American Teardrop Osprey, but this forum informed me of questionable workmanship with the manufacturer.
Just learned about Pro Lite trailers made in Quebec, with dealers in the US. I might be interested in their Suite model, though it weighs 590 pounds. You can sit up at a table in that thing.
I would go for a plain old Little Guy Rascal if one turned up close at hand, even though I don't want a hatch. The problem with most of these tiny sleepers is I may have to go a long way to pick one up, or have it shipped. There aren't a lot of them out there. --Jodi