I’m a huge fan Shark/Ninja products in general but their air purifier hands down my favorite right now! It’s small and compact and ready to use out of the box after you take the protective wrap off the filter inside, that’s a very important step!! I love that all I had to do was take the plastic off and plug it in and leave it on automatic and I don’t ever have to worry about it!! It senses changes in the air quality and reacts accordingly, but it’s so quiet you forget it’s even there!! I’m genuinely impressed by this machine!! And I’ve noticed that we’ve been waking up without a dry burning feeling in our sinuses and throat!