i'd go with a glass one, like the exo terra one with the double doors, cause cresties need humidity to be 50-60%, and an open air kind of cage wouldn't hold humidity very good. if you get a hatchling or a young one, they might be better in a smaller tub like set up so they don't have trouble finding food.

i plan on getting something like the exo terra one when my guy (or girl) gets alittle bigger.