I got this cage for 3 chinchillas.  I liked that it had 2 levels and 2 places that were not wire so they didn't always have to be on a wire floor.  That itself has drawbacks.  One being that these little creatures poo every minute of every day.  So you have to clean the solid spaces daily.  Really not that big of a deal since it is so easy to reach in and use a small dust pan.  The other slight drawback is that even though the wires going the width of the cage are close together, the wires going the depth of the cage are about 5" apart.  Thus, their feet slip through on occasion.  No one's gotten hurt yet.  
Overall, I like the cage and I think the chins are happy.  They have a lot of space to have their wheel, hammocks, igloo, toys, etc.