I have this one from MCage (https://www.amazon.com/gp/product/B07GYYWH8K/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1). I really like it, the door is pretty big and it's all metal construction to be chew proof with 1/2" bars.

The single unit Critter Nation is a really fantastic frame. The Prevue Dusted Rose cage is a little smaller and a little cheaper. This cage might be an okay budget cage as well as this one.