It's ok. Won't buy again.
This is my first diffuser so nothing to compare to. I got EOs from Plant Therapy to use in it. As it diffuses I can see the vapor shoot up into the air and then fall to the table where it sits. I placed a towel under it so it doesn't ruin the finish on my table. It fills a small room nicely with scent. It has a setting to run for a few seconds and turn off for a few seconds, etc. After about an hour you don't notice the scent at all. Would work better if it ran for a few minutes then turned off for 10-15 before running again. It does not shut off when empty. Just keeps running.  It also beeps every time you push a button, which isn't a good idea when using in a bedroom for littles. The next one I get will turn on and off more appropriately and not have any beeping!
Rating: 4 stars