My two cats and I all love this cat tree.  I was looking for a tree that wasn't too ugly as I live in a one-bedroom and this was going in my living room. This one was perfect - neutral and I think pretty nice looking as far as these trees go. My cats took to it instantly, playing on it before I was even finished building it. My cats are 13 and 10 pounds, the tree supports both of them even when the 13 lb boy does a running jump on to the mid-level supports. One thing I will say is that the bottom is a little wobbly, though that's nothing too serious. It was SO easy to assemble, I did it after work in about half an hour.
Overall very happy with my purchase.