Both of my cats love this Cat Tower.  The younger cat runs to the top and jumps onto of my wall unit as she love high places.  She also loves to sleep in the house.  My older cat loves to be on the bottom or she loves to sleep in the house.  This is a great tower because its great for both of my cats.  

Pros: Tall and sturdy.  I have it in a corner against a wall and up against my wall unit.  
Cons: I don't have a con.  Very happy with this Cat Tower.