Aquasonic Black Series Ultra Whitening Toothbrush

The Aquasonic Black Series is Amazon's best-selling electric toothbrush with 50K+ monthly purchases, and it's easy to see why. For around $40 you get an ADA-accepted sonic brush with a 40,000 VPM motor, 4 cleaning modes, wireless charging, a travel case, and 8 DuPont brush heads — enough to last over 2 years. The build quality is surprisingly good for the price, with an IPX7 waterproof rating and a sleek matte black design. It won't match a $200+ Oral-B iO or Sonicare Prestige in smart features, but for raw cleaning power per dollar, nothing else comes close.