Diptyque Electric Diffuser vs Aviva Waterless Diffuser

The Diptyque Electric Diffuser is a design object first and a scent device second: ceramic body, touch control, and nine interchangeable Diptyque fragrance cartridges. The Aviva Waterless Diffuser is a practical essential-oil tool: no water, no heat, battery power, and it takes standard 5ml and 15ml bottles. Buy the Diptyque if you want Diptyque scents and a piece that looks good on a shelf. Buy the Aviva if you want to run your own oils across a room, on battery, without refilling water. Owners of the Aviva rate it well for convenience and portability, but complain about slow charging, a fiddly bottle, and units that failed after a tip-over or long use. The Diptyque has no such owner record here, and its cartridge system locks you into Diptyque refills with a three-month shelf life once opened.

• Choose the Diptyque Electric Diffuser if you want Diptyque's own fragrances, a ceramic body, and touch operation with no bottles or water to handle.
• Choose the Aviva Waterless Diffuser if you want to diffuse your own essential oils, cover a room up to about 400 sq ft, and run cordless on a charge.