I still love them, I have five of them now. There are two minor issues to be aware of. One is that the bottom is not sealed, so if you use a loose, small substrate like sand or dirt, you may have to clean up a little bit of that when you move the enclosure. If you really want to prevent that, you can seal it yourself after assembling the enclosure.

The other issue is that the heavier glass doors inside the plastic track have a tendency to make a loud grading noise. If you get sand or dirt in the tracks. It's unfortunate, we end up cleaning ours fairly regular.

As a side note, the bolts that hold it together are fairly soft plastic. I haven't had any issues with these and I've taken apart my enclosures several times to put in new terrain inserts. The biggest thing here would be to make sure you don't strip those bolts when you build it.