First off, I have been shopping for one of these things for about 4 years, but I either didn't like what I saw or the price was too steep. Sometimes both. This year I decided that I was absolutely going to buy a kitty condo for my three cats no matter what. I found this one and it had all the features that I was looking for. I still hesitated and shopped around at the local petstore. None of the trees were as big as this one and they didn't have the features I wanted. Plus they were almost twice the price. That settled it. I ordered this kitty condo with the hopes that my cats would think it was just as cool as I did. It was supposed to be their Christmas present after all. I put it together as soon as it showed up (assembly was quite easy I might add) and it was an immediate hit. The male cats love the top perches and the female likes the box to hide in. They also like the dangling yarn balls. The one goes so crazy over them that I'm afraid he might fall off because he forgets where he is. They also use the sisal rope pillars instead of my furniture to sharpen their claws. They haven't grasped the concept of the hammock, but I think it may just be a matter of time. This is probably the best cat toy I ever got them and they can look out the entire height of the large front window. My cats really love this thing.