I was very unhappy with my Shark because my husband had asthma attacks every time I vacuumed. I used to always have a machine with a hepa filter and now this new vacuum made it miserable. I decided to buy a couple of new filter sets so I can wash the filter after each use and use a different filter straight away. (It takes a full day for the pads to fully dry.) These filters seem to capture more dust than the original filters and my husband breathes much better. I can even vacuum a couple of times before I have to wash them. Not sure if they are better quality than the originals or if they are just newer than the old filter which was only a few months old but they exceeded my expectations. Thanks for a great quality product.