The top of the iO line for users who want AI-powered brushing feedback, a full-color display, and app connectivity. CNET notes the iO series has five brush modes, more than most competitors, and the 9 adds the most comprehensive smart tracking.
The iO has five brush modes, whereas most electric toothbrushes seem to have three or four.
Wirecutter's top pick for nearly a decade and Reddit's go-to recommendation. Delivers everything you need, timer, pressure sensor, affordable replacement heads, at a price that makes premium brushes hard to justify.
The best value entry into Oral-B's premium iO line. The magnetic motor feels noticeably more powerful than older Oral-B models, and the user-replaceable lithium-ion battery is a long-term durability win.
The iO6 hits the sweet spot in the premium iO lineup, more modes and features than the iO3 without the steep price of the iO9 or iO10. Reddit and CNET both flag the iO4-6 range as the best value within the iO series.
Tom's Guide calls it the best kids' electric toothbrush, with an ergonomic grip, 2-minute timer, pressure sensor, and gentle oscillating movement sized for small mouths. Wirecutter also notes the Pro 1000 handle works with Oral-B's kid-size heads as a family-friendly alternative.
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