Pros: Scratch posts are well used.  My cat enjoys the height, which gives him a clear vantage of the room (something most cats want since they are natural hunters).  My cat has enjoyed this tree and uses it alot.  He hasnt sharpened his claws on the furniture since I got him the tree.  Very good for the price.
Cons: The base is too small and the cat tree rocks (fell over once) when my cat makes the mad dash to leap onto the tree.  The string toy is too easy for the cat to remove (the manufacturer notes that the toy is only for display).