Levoit Classic 300S vs Superior Studio 450S

The Levoit Superior Studio 450S is a better humidifier overall than the Levoit Classic 300S. The 450S uses a fan and wet wick to release moisture into the air, while the Classic 300S uses ultrasonic technology to produce a visible cool mist. The 450S can bring a dry room up to a comfortable humidity level faster, and you won't have to worry about white mineral dust settling on your furniture if you use tap water. It also takes less effort to clean, with several dishwasher-safe parts and a machine-washable wick. The Classic 300S lasts considerably longer between refills, though, which makes it the better choice if you want a humidifier that needs less frequent attention throughout the day; both offer app control and automatic humidity adjustment.