We've had this for about a year now.  About two months ago we moved it against a south-facing window and that has made all the difference.  The cats used to jump up on it once in a while, but now they sleep on if for hours in the sun.  It's great to come home and see them in the windows and the tree looks surprisingly appropriate there from the inside.

Neither of them have dared to climb to the top pedestal and I would have to say that the soft basket and hammock could realistically only support a small kitten.  The ladder is really just for show, let's face it.  Our two cats fight over the apartment on the top, but the loser gladly takes the teepee underneath it.

It's sturdy and well built.  If you can afford to splurge on your cats, or if your spouse requests it as a birthday gift, as mine did, I would say it's worth the cost.