This diffuser works really well to fill big spaces, and its design funnels the steam in all directions, unlike many diffusers that mostly shoot up. It's extremely simple to use and looks very modern and sleek. I also have the PureSpa compact diffuser, which I use in my office now, and it's perfect for a smaller space. This one is best to fill a big area. It also works really fast! I just timed it, and within 3 seconds of turning it on, I could smell the essential oil. If you don't already have a diffuser, I highly recommend getting one - it's amazing how much of a difference real essential oil scent can make in mood! I find it to be an entirely different and much better experience than using any other type of scent or room freshener. Also, even if you already have one, I would consider switching to this one if your current diffuser only shoots steam directly upward. This one is really excellent at spiraling the scent in all directions. It's overall highly recommended!