I used the shark's sense, they introduced their first vacuum cleaner. Let me just say that this is not only the WORST shark vacuum cleaner I have ever used, it is also the worst vacuum cleaner I have ever used! First, it's very heavy, which makes it almost unwieldy. If you only use a word to wash the floor, the hand of the weight will get tired. I would like to say that I work in construction and I am in very good shape. So when I get tired, my arm says a lot considering I'm carrying a bucket of 40-50 pounds of drywall dirt eight hours a day! Now the suction. I'm just saying my broom is better at getting dog hair out of the carpet than that crap! I've had to replace it once before due to a broken cable and it caught fire within a week of purchase. The replacement came quickly and was a pleasure dealing with this company. My problem is not with them but Shark should take the model off the market because when I first bought my first Shark 7 years ago I was thinking about buying another brand. What a complete waste of $200+!