I received my Single Diffuser about one week ago and have enjoyed it each day since. It arrived beautifully packaged and would make a very impressive gift. I selected the "Calm" essential oil and was pleased that the diffusor came "pre-charged" with the fragrance. I poured in the bottle using the provided funnel and the diffusor was working and smelling great immediately. The scent is subtle, not too bold or overwhelming, and the wooden diffusor adds a certain richness and fullness to the fragrance. I keep it open on my desk during the day while I am working and find it very pleasing. It also looks attractive on my desk. I will definitely consider buying a larger diffuser as well as a subscription in the near future.