Assembly was quick & simple.  (very well engineered)   It's very sculptural and people walk over to it when they come into the room for the first time.  Unless the cat is sitting on it, they ask what it is.  One guest said.. "Ooh!  I thought it was an art piece of something!"   The cats love it.  It's the Purrfect Purrch.   

Pros: Easy assembly, attractive decor
Cons: can't think of any