I love my showcase cage. They are difficult to find used, and the price for a new one is high. I like that the fluorescent fixture holder is near the front, they have good ventilation, and look nice from the outside. The gaps above and below the doors are a drawback, but they're worth it considering the molded plastic design with more rounded corners.
I have a boaphile that's cracked from warping (purchased used), and I have heard that the plastic cages that require you to assemble them have leaking issues over time. I can see that making cage cleanings problematic.
I do like the looks of the animal plastics enclosures and have considered them over the years but the risk of leaking, squared corners, the piece of plastic in the middle of the front, and lack of areas for light fixtures have kept me from purchasing one. They are very reasonably priced, though.