I am very happy with this cat tree.   It was very easy to put together.   It wobbles a little, but we have it against a wall so it's not a problem.  We have two big cats (12 & 16 pounds), and there are plenty of places on this tree for big cats.  The very top platform is too small for them to sleep on, but they still play on it.  I've just had it for a week, but the cats are on it a lot and I anticipate years of use.  And the black & white color looks great in my house, a nice change from the typical beige color cat trees often are.  It doesn't have a big footprint, but has lots of platforms / houses for the cats.

Pros: Reasonable price, easy to put together, good for big cats, nice colors.
Cons: None