thinking
CJKrawler
Old Time Jeeper
If you want a good trailer that will last, stay away from the "travel trailer turned into a flatbed" deals. The frame on those are not nearly strong enough to haul much more than a couch without major, major (I mean rebuilding the entire frame) work.
Don't believe me? get under any camper and look at the sub structure. Mostly a frame of 2 main rails of 3" channel and a bunch of 2" angle outrigging. Great for people walking on the plywood floor, but not so great for a 3000+ Lb. vehicle.
This was another thought that I had, but have not seen the chassis of one, which was my major concern. I am no where near ready for one, but I figured it wouldn't hurt to look. Thanks for the insight on it though.