Great, quiet
I bought this one because the other more expensive brand I found on Amazon came and was a bit disappointing. I bought this in conjunction with a smart switch and tossed it up on top of my fridge and let it run for a set amount of time when I'm out of the house with the family. I'm not sure about the negative reviews, runs great (powerful ionizer and super quiet fan) and does a great job. Highly recommended. Only weird thing is that it asks that you plug it into a grounded outlet but then the power cord they provide doesn't have the 3rd ground prong - I'm no electrician, but that just seemed weird.
Rating: 5 stars