I've coveted this design for years, but the reviews are so awful I never took the plunge. I was in a Saje recently and was chatting with the sales associate, who mentioned she had bought one for her roommate and it had been going strong for a year. I decided to grab one. It's perfect! The heavy weight of the glass shell doesn't shift, and softly sits back into place on the base. The matte black is sleek and pretty- it's a decorative piece and functional. Intermittent seems to last forever, longer than it says. It fills my bedroom with scent. I'm heavily into the pure grapefruit oil as it's so dark and cold outside, and it's really perking me up.