The first vanishing bird cage that I had was a La Galleria and was given to me when I was a teenager. It has broken bars and while I used it for years, the broken bars were a challenge. I eventually had it repaired and it worked great!
Recently one popped up for sale that was in great shape, so I bought it. Here it is on the left next to my old one on the right:

My old one collapses really well, it’s got a nice action to it. The one I just got doesn’t really collapse well. It’s like the hinges that hold the large side bars on it are slightly too big and you almost have to fight the cage to get it to collapse, and when it does it’s not as slim as it could be.
I’m glad I have my original cage as it works much better, and I’m not judging this version of the vanishing bird cage on the recently acquired one. It’s nice to add another to my collection, but that one will be a collection piece and not a working one for me!
-Louie