Love this humidifier. I've been using it constantly for about a week and have had no problems. While I was moving it, it tipped back a little bit and the emergency shut off shut it off immediately so I can trust that it is safe. It also does shut off when it's empty. If you are concerned with fingerprints, the black one does leave them. I don't imagine the white one would, but it’s not a big enough deal for me to care. I'm super happy with my purchase.