Question 1

Which is better, Oral-B iO Series 9 Electric Toothbrush or Philips Sonicare DiamondClean Smart 9500?

Accepted Answer

Based on our testing, the Oral-B iO Series 9 Electric Toothbrush scores higher overall at 9.5/10. The Oral-B iO Series 9 Electric Toothbrush scored 9.5/10 and the Philips Sonicare DiamondClean Smart 9500 scored 9.3/10 in our Best Electric Toothbrushes 2026 evaluation.

Question 2

Is the Oral-B iO Series 9 Electric Toothbrush worth it over the Philips Sonicare DiamondClean Smart 9500?

Accepted Answer

The Oral-B iO Series 9 Electric Toothbrush scores 9.5/10 while the Philips Sonicare DiamondClean Smart 9500 scores 9.3/10. The Oral-B iO Series 9 Electric Toothbrush is our "Best Overall Electric Toothbrush" pick in the Best Electric Toothbrushes 2026 category.

Oral-B iO Series 9 Electric Toothbrush vs Philips Sonicare DiamondClean Smart 9500: Which to Buy?