Chinese knockoff devices?

I have three of these in my possession (thanks to a wonderful wife/KH): a jailhouse, a jailbird, and one other whose name I can’t quite recall.

Has anyone else used any of them? Did they work out well or poorly?

So far, the black jailhouse has been great for me over this past week. It’s very comfy, and she absolutely adores how it looks. (I swapped my CB6000s for this one)