(checked 2026-10-14)Small sample: 564 ratings on the 'iO Series 6 Sensitive Edition' (Pink Sand) listing (80% 5-star, 6% 1-star, 2% 2-star). No 'Customers say' summary was shown.
Wirecutter's pick if you want to upgrade from the Pro 1000: quieter, with a lighted pressure sensor and a display, and about 16 days per charge in Electric Teeth's test. It regularly costs about three times as much as the Pro 1000, and its iO-only heads cost more than double standard Oral-B heads.
Common Oral-B iO Series 6 problems
- Costs much more, with iO-only heads
Wirecutter says it regularly costs three times as much as the Pro 1000 and its heads cost more than double; standard Oral-B heads don't fit iO models. Electric Teeth lists the iO-specific heads and the non-essential Bluetooth as its cons.
- Gunk builds up at the head mount
Wirecutter notes some customer reviewers clean the junction between head and handle daily, and Electric Teeth says the attachment point can collect mold if not cleaned regularly.
- Drooly brushing for some, slow charging
The size and shape of iO heads gave some Wirecutter testers a more drooly experience than the Pro 1000. Electric Teeth says a full charge takes up to about 12 hours.
What owners like
- A pressure sensor that works
Wirecutter found its light-up pressure sensor much more effective than the Pro 1000's. Electric Teeth describes a white, green and red light ring that also warns about too little pressure and slows the motor when you press too hard.
- Quieter than other Oral-Bs
Wirecutter found it quieter than the Pro 1000 in all five modes, about as loud as the Sonicare 4100 on high. Electric Teeth measured it about 10 dB quieter than non-iO Oral-B brushes.
- Long battery, display and travel case
Electric Teeth averaged about 16 days per charge and notes a head-replacement reminder and a travel case for the handle and two heads. Wirecutter likes the digital timer and battery display.
- You want the cheapest heads
- You don't want to clean the head mount often
- You only need the basics (the Pro 1000 covers them)
- A visible pressure light that also flags too little pressure
- A quieter Oral-B
- Timer and battery display without needing the app
Scores (tap for why)
What experts say
- Wirecutter (NYT): The upgrade to get over the Pro 1000 (guide updated 2026-09-01) and the best value in the iO line, but it costs about three times as much and its heads more than double.
- Electric Teeth: 5 stars, 87 overall (2026-05-27): a nice balance of features and price, quieter than other Oral-Bs, but iO-only heads and Bluetooth add cost. It doesn't clean better than cheaper brushes, though results are 'superb'.