I purchased two Aroma Om diffusers (one in black and one in white) a year ago and couldn't be happier. They both look great, but more importantly they work really well. I use them pretty regularly and haven't had any problems. I like that there is an intermittent setting and a continuous mist setting. As the previous reviewer said, it is a bit awkward to have the electric cord plug into the bottom of the unit, however you do get used to it. As careful as I am with them, I am still concerned that I will break a ceramic lid one day, but the plastic diffusers are not nearly as nice as the ceramic ones so it's worth the risk!