Just a "heads" up... Casita 13s and 16s and pre-fire Scamp
13s (2006 and earlier) have less than 6' of headroom. Post-fire Scamp 13s, all Scamp 16s, and Casita 17s are taller.
However, although Scamp specs 6'3" headroom in my post-fire 13'er, I only measure about 6'1.5". If it has a roof AC, that also intrudes a bit more. I suspect Scamp 16s and Casita 17s are similar.
The other thing to consider is bed size. All Scamp and Casita beds are about 75" long, limited by the inside width of the trailer*. That will leave you bumping up against the wall on both ends unless you sleep diagonally.
*except Casita Liberty and Independence models
Some tall people find them acceptable, others not so much. Only way to find out is to check out a few in person.
Several of the newer designs are more accommodating for taller folks: Parkliner
, Lil Snoozy
, and Escape