My 3 kitties love their new cat tree!  It arrived quickly in a large (heavy!)box, and I was expecting my husband to have to put it together.  However, after unpacking everything, the directions made it quite easy to simply screw on the scratching posts to the other pieces.  It all went up within 10 minutes!  Fantastic quality and a terrific bargain on sale!  I plan to buy a similar, but smaller one for the bedroom.

Pros: Easy assembly, GREAT quality
Cons: Heavy