Hoping for a 2014 update to this oft-asked thread. Advice for small office air cleaner? HEPA, no ozone or ion, and *ideally* exceedingly quiet. Tall order, I know. We have cats, no central air or ac and a neighbor who loves, loves, loves to burn outdoor fires. Currently, we swiffer and damp rag down things, but I'm looking for something that will assist in our endeavors. I was considering rabbitair, but there is something called cadr.org that didn't list them there. Anyone have any air purifiers/cleaners they love? I've heard good and bad about blueair. Budget is $300-$500. Thank you!