Both oil diffusers are nice, but I prefer the glass diffuser while my bf prefers this ceramic one. The ceramic diffuser is superior in several ways -- namely, it is heavier and more stable so you are less likely to knock it over and spill hot water and oil on yourself. My biggest issue with this diffuser is simply that I think the lettering on it, while possibly helpful, is also ugly looking. The glass diffuser looks prettier and costs less. Side note, the oil diffusers are great to use while warming up your box, and it is especially handy to use after vaping product. In addition, if you have concerns about nosy, judgmental individuals questioning what the box is used for, the aromatherapy explanation is handy in a pinch.