What Brand & Model Plug-in Air Purifier Have You Used Or Recommend?

I need the best quality out there. Provides an Ultra Violet light, cigar/cigarette smoke remover, allergy relief, cleans large room per hour, minimal maintenance costs.
I'm not talking about something from a spray can! This is a $100+ item that needs filters cleaned/replaced in aid for allergies & other health issues.
What of the Biozone air purifier?
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