Oral-B iO vs. Philips Sonicare — which cleans better?

There is no clear winner across the reviewers we read. Oral-B iO models use oscillating-rotating micro-vibrations with a round head; Sonicare uses high-frequency sonic sweeps with an oval head. Specialist subreddits like r/oralbtoothbrush and r/BuyItForLife have committed users on both sides, and most dental hygienists in those threads say either platform cleans well when used correctly. Pick based on the feel you prefer.