I really wanted to fall in love with this vacuum cleaner because of the strong fins. I have long hair that falls out like crazy and I'm so tired of vacuuming my hair weekly. That was the most attractive thing about this vacuum cleaner. It worked very well and the hair never got stuck in it. It worked just as well on hardwood as it did on carpet. Unfortunately, he will shock you about every 30 seconds, and each shock will be stronger than the previous one. Everything about this vacuum was perfect except for the shock. I was hoping it was just an accident so I sent mine back and ordered another. I was very disappointed to see that the second one did the same (as per other reviews). I wish Shark would fix that because I liked everything else about it, but it just isn't worth the shock.