Oralb Io Series 9 vs Philips Sonicare Diamondclean

The Oral-B iO Series 9 uses oscillating-rotating technology with micro-vibrations, a 2-minute timer with 6 pressure sensors, and costs $280, while the Philips Sonicare DiamondClean 9000 uses sonic vibration at 31,000 strokes per minute, has a pressure sensor with 4 modes, and costs $230. The iO 9 delivers superior plaque removal per clinical studies, but the DiamondClean 9000 offers a sleeker design and quieter operation.