I just purchased my PureZone Breeze Tabletop Air Purifier and love it so far.  It's a great size to move around.  We live on a farm with horses and have 5 inside dogs.  I need all the help I can get!  So far I am moving this purifier from room to room and it's working great to keep dust and allergens down in every room.  Also, I checked out how to clean filter and remove/change and all appears easy enough to do!