I've been using this air purifier for a few days now, and as someone who suffers from seasonal allergies—especially in the spring—it's already made a huge difference. Normally, I wake up in the middle of the night with a dry cough, but since I started using this, I've been sleeping through the night without a problem.
It's incredibly quiet—practically unnoticeable—and the smart mode takes care of everything automatically.
If you're dealing with allergies or just want cleaner air without the hassle, I'd definitely recommend this purifier.