Love it, thinking about getting another one, have had this one for at least 4-5 years now.  Cats love it, and made a nice bed area on the top.  Easy to scoop the litter out, sit on a short short stool, and scoop.  Easy enough to just slide the whole pot out when scooping too.

Pros: Easy to assembly, and worth the money
Cons: can't really think of any