This product is great; it was fun to assemble and very easy.  I chose this particular product because of the height (which my cats love) and the small footprint.  The small footprint allowed me to easily place this in my 1040 sq ft condo without feeling overwhelmed.  The product is durable, lots of scratching area, and the two high platforms are great for the cats to get a view of our home.  I have a 5 year old male and 2 female 5 month old kittens and all 3 loved this tree from the get-go.

Two caveats - the upper platforms are pretty small.  The kittens fit really well but my 15# male cat hangs off the edges.  Still, he sleeps and lounges up there often.  I just wish the platforms were bigger for his comfomt.  Second, no one uses the hammock at the bottom.  My cats avoid it and the only use it's gotten is from one of the kittens chewing on the ropes that attach it to the tree.