I brought this little gem in to my work office.  I have been having a lot of allergy issues, so I was hoping it would help.  So far I think it is working.  It is not very mini, it is about 3ft tall, but it is really quiet and not distracting at all.  I do have it on low at the moment.  The light indicating how pure the air is is a nice touch.  So far it is true blue.