I compared several products before I purchased this one.  For the price, this Cat Tree is absolutely one of the best.  The base is large/heavy enough that I don't have to worry about the tree falling over when my cat goes flying off of it.  I am particularly happy that I purchased a taller tree, because my cat loves it and he is very active.  

The one con that I have about the product is the cheap carpeting.  I am constantly cleaning up the remnants, and soon there will be bare areas on the tree.  

Overall - 4 stars    

Pros: Great value, nice height, easy to assemble, cat loves it
Cons: Cheap carpet