recommend an air purifier for under $100

[neeleymartin]

looking for good white noise. tia

[tiapam]

I got the one shown here:

http://germguardian.com/shop/cartproductdetails.asp?productid=3

I got it from Costco bundled with a humidifier. The humidifier really does not work so well after awhile. But the purifier has been great for white noise (not too loud, not too quiet, very even) and is perfect for travel (when I remember to bring it).