I selected this cat tree for size and stability.  My cat loves the perch jumping, doesn't use box hideouts.  Easy to put together.  Only thing not happy with comparing to other previous cat trees, is the use of cardboard bottom with carpet covering vs. pressure treated wood others use.  Description should inform base, frame made from cardboard and not pressure treated wood.

Pros: My cats love.
Cons: Cardboard base and frame.