Beauty & Grooming · Head-to-head
Oral-B iO Series 2 vs Philips Sonicare 4100 Series
Which should you buy? Our verdict on both, pulled from our full The Best Electric Toothbrushes (and the Trendy One to Skip) comparison.
The Oral-B iO Series 2 wins on cleaning power, a clear pressure sensor, a quiet motor, and a four-week battery 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 itThe best all-around pick: real oscillating-rotating cleaning, a bright pressure sensor, and a quiet iO motor without the flagship price.
- Round oscillating-rotating head hugs each tooth and removes plaque effectively
- Pressure sensor that glows red and slows the brush, plus a 2-minute timer with 30-second pacer, the features dentists actually ask for
- Oral-B rates the battery at four weeks per charge, and the iO motor runs quietly
- Firm vibration can feel harsh on sensitive gums
- No Bluetooth or app on this model, and iO refill heads cost more than Sonicare's
Philips Sonicare 4100 Series
Buy itThe best value: gentle high-frequency sonic cleaning and a two-week battery at a budget price.
- Gentle sonic vibration is kinder to sensitive gums and receding gum lines
- Philips rates the battery at 14 days per charge
- 2-minute SmarTimer with QuadPacer, pressure sensor, and simple one-mode, two-intensity operation
- Pressure-sensor and timer alerts are subtle and easy to confuse or miss
- One mode with two intensities and no app for those who want tracking
Side by side
The 6 criteria below are the ones our full comparison judged every product on, narrowed to these two.
| Oral-B iO Series 2 Our pick | Philips Sonicare 4100 Series | |
|---|---|---|
| Our verdict | Buy | Buy |
| Best for | Most people who want dentist-approved oscillating cleaning with pressure feedback at a fair price | Budget-minded buyers and anyone with sensitive gums who wants a gentler sonic feel |
| Price tier | $$ · mid-range | $ · budget |
| Cleaning action | Oscillating-rotating | Sonic vibration |
| Motor speed (maker) | Not published | 31,000 brush strokes/min |
| Pressure sensor | Yes, red light, slows brush | Yes, flashing alert |
| Brushing modes | 3 | 1 (2 intensities) |
| Battery life | Up to 4 weeks | 14 days |
| Smart app tracking | No | No |
Which one is right for you?
Pick the Oral-B iO Series 2 if
most people who want dentist-approved oscillating cleaning with pressure feedback at a fair price.
Know before buying: firm vibration can feel harsh on sensitive gums.
Pick the Philips Sonicare 4100 Series if
budget-minded buyers and anyone with sensitive gums who wants a gentler sonic feel.
Know before buying: pressure-sensor and timer alerts are subtle and easy to confuse or miss.
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 a quiet iO motor 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).