I initially went in to purchase a Bissell, it is the vacuum that I currently have and know that it will work for the type of household I have. I have six rescue dogs and three cats and on occasion foster an extra dog. This means hair, and a lot of it. When looking around and taking some extra time to read some reviews on the vacuums that my store carried I decided to spend a little extra than what I would have spent on the Bissell I had initially set my mind on. I purchased the Shark Navigator Pro. It is light weight, so easy to move. The extra capacity and the ability to empty the dirt collector from the top is also pretty awesome. The machine is quiet, and was super easy to put together. Now, to the main reason I am upset and displeased with this product. The suction is amazing, the product does have an automatic shut off to prevent frying the motor, also great. However, this machine will clog so quickly and so easily it's ridiculous. I have not once ever had to stop vacuuming my living room with my 9 year Bissell and try to empty out hair that is not even tightly clogged. It is literally just loosely balled hair hanging out in the tube??? This then causes the Shark to turn off the prevent overheating. Awesome, I gave it a second change after taking nearly 45 minutes to unclog everything, to make sure that every orifice on the machine was clear. I tried the next day to vacuum where I had left off, in a less traveled room. Meaning no dogs go in this room, not to say there isn't dog hair, just a lot less that everywhere else. Within less then ten minutes it had shut itself off again!!!! So I again sat down trying to find out where it had clogged. After 30 minutes of removing all the hair, I had resolved myself to putting it back into the box and returning it. The one thing that I am most upset about is on their box and their site they compare this vacuum to Bissells pet vacuum. There is zero comparison, I will admit the lightness, great! The loudness, even better. But I will take a machine that can perform over one that is quiet and light.