This is my second Shark cordless upright vacuum.  My wife and I thoroughly enjoy it.  We live in a 1200 sq foot condo and it is the perfect to doing the entire condo at one time.  The suction is great.  When we got our first Shark, my wife was not that happy.  She really loved her Dyson cordless. But after she saw how much more the Shark picked up she became a true believe.

Pros: Cordless, light weight
Cons: None