Noahstrong 500ml Oil Diffuser vs MUJI Ultrasonic Aroma Diffuser

The Noahstrong 500ml is the better pick for a bedroom, office or living room where you want scent for hours and a light you can set. Its 500ml tank, 4 mist modes and remote control cover far more ground than the MUJI-style 100ml unit. The small diffuser wins on looks and simplicity: a warm two-level LED, a 30-minute to 3-hour timer and a beep when the tank runs dry. Owners of the small unit call it durable and easy to clean, but many say they refill it often. The Noahstrong is ABS plastic and the small one is polypropylene; neither is a premium build, so judge them on capacity and controls.

• Choose the Noahstrong 500ml if you want long mist runs, a remote and a color-changing night light for a room bigger than a desk corner.
• Choose the small 100ml diffuser if you want a quiet, minimalist bedside unit with a warm glow and a short timer for winding down.