Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good bang for my buck

Nice and small, it's compact enough to keep above a chest of drawers and powerful enough to keep our entire 2nd floor (it's a converted attic, approximately 10' x 30') free of that dingy, dusty scent that seemed to plague it. A bit noisy on the highest setting, but if you only use it during the day when you're not home, who cares?Works well at the 2nd highest setting, also. And this setting is much quieter and less distracting.