I bought the small self cleaning vacuum last spring. I was having shoulder surgery and facing a long recovery. My husband is not domestic. I didn't want a cleaning service so I made it work for me 'single handed' for a while. I have had several Shark Vacuums and love them. I had up to 10 Siberian Huskies living in the house with us at one point. It was a lot of dog hair but the worst was my hair. With the self cleaning power head and the extra large catch cup, I am so happy I can just clean the house. This model is heavy duty and can do the whole house without having to take the roller head apart more than one time and empty the waste container repeatedly. I don't have as many dogs now but routine is I can do the house and be done, BAM! I was surprised that it didn't have headlights like others do but that is not a huge drawback. I love the little one I bought because it does have lights when using the floor attachment as well as without. I am glad I have both.