I've heard good things about the Retros. I've also heard good things about the Casita, Scamp, and Escape. Seems the folks running these "light-weight TTs only" factories are doing a better job than most of the big stuff.
1975 American Clipper RV with Dodge 360 (photo in profile)
1998 American Clipper Fold n Roll Folding Trailer
Both born in Morgan Hill, CA to Irv Perch (Daddy of the Aristocrat trailers)