In a small NYC apartment, I think whatever cat play environments are going to take off a lot of "real estate" and be very visible. Not only are traditional cat trees ugly, they're hard to keep clean and they're very expensive. The first time I saw one of these kits, I knew I had found the right thing, appealing to both me and my cats, and well within my budget. Though my cats are seniors and don't play as much as they used too, they love having their own environment to hang out in. In fact, one cat is asleep on one of the top levels as I write this review. And the lower levels are easy for the less mobile cat to access.

Pros: Attractive, logical, affordable and flexible configurations
Cons: Not as sturdy as it could be, with cats jumping all over it.