Oral-B iO Series 2 vs Philips Sonicare 4100 Series

The Oral-B iO Series 2 wins on cleaning power, a clear pressure sensor, and useful app feedback at a mid-range price, while the Sonicare 4100 is the better-value, gentler choice for sensitive gums. Skip the Quip: it's more subscription and style than cleaning performance.

Oral-B iO Series 2

Buy it

The best all-around pick: real oscillating-rotating cleaning, a bright pressure sensor, and app feedback without the flagship price.

• Round oscillating-rotating head hugs each tooth and removes plaque effectively
• Genuine pressure sensor plus a 2-minute timer and pacer, the three features dentists actually ask for
• Bluetooth app gives real-time brushing feedback

• Firm vibration can feel harsh on sensitive gums
• No automatic shutoff, and refill heads cost more than Sonicare's

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Philips Sonicare 4100 Series

Buy it

The best value: gentle high-frequency sonic cleaning and a near-month of battery for around $45.

• Gentle sonic vibration is kinder to sensitive gums and receding gum lines
• Roughly 28-day battery life, far longer than most Oral-B models
• Automatic shutoff, 2-minute timer, pressure sensor, and simple 2-mode operation

• Pressure-sensor and timer alerts are subtle and easy to confuse or miss
• Only two modes and no app for those who want tracking

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Side by side

The bottom line

Our overall pick is the Oral-B iO Series 2 - The best all-around pick: real oscillating-rotating cleaning, a bright pressure sensor, and app feedback without the flagship price. Choose the Philips Sonicare 4100 Series instead if budget-minded buyers and anyone with sensitive gums who wants a gentler sonic feel.

Want the full picture, including the other options we compared and the popular one we'd skip? Read the complete The Best Electric Toothbrushes (and the Trendy One to Skip).