Spring is my favorite time of year, but my allergies think otherwise. Air purifiers have been vital for me, but after a while I found that they are not all made the same. 
Shark’s air purifier is my absolute favorite, because it can cover my whole floor. 1200 sq ft is a great coverage. The HEPA filter catches it all, it makes me feel safer. I have a kid and two dogs who live for making a mess - to my surprise I am still unbothered. Dust, dander, fur - no issues. Without Shark, I would have been walking around with runny nose and my inhaler. I love that it traps odors too. It’s not noisy like my other ones. It’s just a great choice in my personal experience.