You have a ton of choices at a variety of price points from around $10K to over $30K.
Scamp and
Casita 16'ers come in at the low end of the price and
weight spectrum.
Casita 17'ers have more room and bigger beds, but are a lot heavier.
Escape,
Parkliner,
Egg Camper L'il Snoozy, and
Bigfoot also make models in your size range.
Escape, L'il Snoozy, and
Bigfoot (as well as
Scamp Deluxe models) have traditional wood cabinetry inside; the rest have molded
fiberglass interiors, if that matters to you.
Bigfoot is a popular choice for cold-weather campers.
Egg Camper is all-electric.
Three important questions:
(1) Do you have a
weight limit? There is a sticky thread in the General Chat section called "Trailer Weights in the Real World" you may want to read. Post #297 has a handy downloadable spreadsheet sorted by make and model.
(2) Do you have a budget in mind? The
sold archives at
Molded Fiberglass Trailers | Fiberglass RV's For Sale can give you a feel for prices. It's also one place to look for used trailers and to look at photos of different models.
(3) Are you "size-challenged" (meaning tall or big)? There are differences in interior height and bed size that may influence your decision.