I have been eyeing air filtration systems for a long time and the Shark air purifier has been amazing! It is perfectly sized and doesn't take up a ton of floor space which is great. It is lightweight which is also nice because I move it all over my house often. I love that it tells you real time air quality on the screen on the front. When I feel like the air is getting stuffy in one area of my house, this purifier is lightweight enough for me to just relocate it whenever I feel I need it. It is so quiet! I also love the lock feature because I have curious little ones who love to push the buttons so I'm glad I can lock them. It is awesome to be able to cycle through and see the amounts of different types of particles are in the air. It is sleek looking so it doesn't make in an eyesore in any space in your home. I am truly impressed with it!