MKish, you are on the right path. Look, evaluate and look some more.
We looked at PUPS, A-liners and a Casita to decide on what we needed. We needed a bed you could exit without crawling over your spouse, closets to keep clothing and linens in, a decent sized bath and room for a big dog. Also, it had to be small enough to wind through city streets to find quilt shops, towable by our TV and not cost too much.
We settled on a 25 ft. TT, and then rented one for a trip to the Ozarks, to see if we were right; before we spent the big bucks.
Advanced planning eliminates a lot of buyer's remorse.