You need to realize that AUC and Saba are very very different schools, both in a standpoint of academics, class sizes, campus size, and location. Saba is cheaper, but hard to get to, and stuck on a little remote island. I've heard some bad things about the teaching at Saba from current students (basically, teach yourself)... AUC is on a much more developed island, easier to get to, and a better reputation/more well known with residency programs. Just do your research, they're really different schools.