We mainly look for the quality of the lounging shelves, since the cats aren't too interested in the enclosure. This doesn't fit our bill, since the lower shelf can't be used

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[updated on 2009-01-30 02:01:23 GMT]:
This is again a leftover from our kitten days--even young cats would play on this. But as they've gotten older they've stopped playing in the lower level, so that just leaves the top for lounging

Pros: none

Cons: none

We've found that the house sections with two openings are preferred--perhaps due to claustrophobia? It's a nice level for a window perch

Pros: none

Cons: none

kitties like to curl up inside and hide. Gives them a place to go and feel safe when you have guest over.

Pros: cave

Cons: cost

My cats love it. They like to sit on it by the window and stare at birds.

Pros: Cats love it.

Cons: None.

This one is very tall and looks very durable. It has a variety of things.

Pros: very attractive

Cons: none