We purchased the shark navigator after we had laminate flooring installed throughout our home.  It is light weight and has a very strong suction.  I like that the dirt collected can be simply emptied by pressing a button over the garbage can! We have a small dog and it pick up the hair easily.  The only semi-negative comment I have is, I wish the hose would expand more when you use it with the attachments.  The vacuum will fall over when the hose is stretched too far.