Pros: durable, sturdy
Cons: Can't put directly next to wall
My cats like and use this tree. It is not wobbly at all. I've had it for 3 years and the only sign of wear are the rope scratching post parts that my cat claws on. My cat actually loves the ball toy that came with the tree. She actually pulled it off so now we just keep it on the ground for her.
The only thing I would change is the fact that the third platform juts out further than the baseboard on the ground, so you cannot place it in a corner without there being a gap.