Having owned a few of the campers on your list, I would caution you they are not interchangeable.
Scamp layout is different than
Casita, which is different than
Escape. We made the mistake of not focusing on floor plan. So we bought a mistake..... Contact the manufacturers who will refer you to owners in your area. Then view those trailers. Bed size, where will sit, how tight is the bathroom, can we pass each other in the main aisle way, and so on.
Good luck with the search!