Well they can be handy.
one problem is they are so open you may find it hard to keep the temp. right for basking areas.
they can get zipper problems.
they can be good for "travel" cages.
they can be good for "daytime" cages in hot climates
they are not strong so if say a dog or a child falls on one it will collapse and not protect the lizard.
I would not use one for a small dragon due to the temp. problems.
I have one I use for my adult, but as more of a home base than a cage and I have the top cut out to make room for lights and keep that corner of that room very warm. if I did not it would be too cold. I live in Florida where it is very warm most of the year.
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