Nesco Diffuser- White Oak
It's just as pretty as its picture and easy to use. It shuts off automatically when the water level is too low.
My only negative comment would be that it has a small basin so when used on hi, it seems to run out quicker than I'd like.
On a positive note, I had an issue with something in my initial order but Massage Warehouse Customer Service took care of it right away with no hassle!