Awesome for our rat family! They love it! Sturdy, good quality, super fast shipping. 
My only complaints are that there was metal dust (from when they drilled the screw holes) all over my floor when I was done, and some of the cage parts were very hard to position correctly because of a little poor assembly, but we made it work with a little help from a rubber mallet and elbow grease. 
Be careful with the screws, we stripped 2. Not sure if it was the quality or the elbow grease. 

Overall great buy! Would purchase again.