Looking for an honest Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black Onyx vs Oral-B iO3 Series 3 Luxe Electric Toothbrush w 3 Modes - White - , D1 comparison in 2026? We scored both electric toothbrushes on the same six-dimension framework — performance, battery, display, camera, design and value — using identical methodology, so the numbers below are directly comparable. In our overall scoring the Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black Onyx comes out ahead 68/100 to 51/100 — a 17-point gap. The widest gap is in design and build, where the Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black Onyx pulls noticeably ahead. On price the Oral-B iO3 Series 3 Luxe Electric Toothbrush w 3 Modes - White - , D1 undercuts the Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black Onyx by 541% ($31.99 vs $205), which materially changes the value calculus for budget-conscious buyers.
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Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black Onyx clearly outperforms the Oral-B iO3 Series 3 Luxe Electric Toothbrush w 3 Modes - White - , D1 in the electric toothbrushes category, especially in design, scoring 68 vs 51. If you want the better overall electric toothbrushes, Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black Onyx is the recommended choice.
Picking Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black Onyx over Oral-B iO3 Series 3 Luxe Electric Toothbrush w 3 Modes - White - , D1 means trading these off.
Oral-B
$205
Oral-B
$32
Scores are relative within the electric toothbrushescategory. Percentages show each dimension's weight in the overall score. A difference of less than 0.5 points is considered a tie.
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✓ Pros
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| Spec | Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black OnyxW | Oral-B iO3 Series 3 Luxe Electric Toothbrush w 3 Modes - White - , D1 |
|---|---|---|
| Price | 205$ | 31.99$✓ |
| Battery Life | 14hrs✓ | 10hrs |
Buy Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black Onyx if…
Buy the Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black Onyx if you want the best performance in this comparison. It scores higher overall and is the recommended choice for most buyers.
Buy Oral-B iO3 Series 3 Luxe Electric Toothbrush w 3 Modes - White - , D1 if…
Choose the Oral-B iO3 Series 3 Luxe Electric Toothbrush w 3 Modes - White - , D1 if budget is your top priority — it offers competitive specs at a lower price point.
Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black Onyx clearly outperforms the Oral-B iO3 Series 3 Luxe Electric Toothbrush w 3 Modes - White - , D1 in the electric toothbrushes category, especially in design, scoring 68 vs 51. If you want the better overall electric toothbrushes, Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black Onyx is the recommended choice.
Yes, Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black Onyx scores higher overall (68 vs 51).
Oral-B iO3 Series 3 Luxe Electric Toothbrush w 3 Modes - White - , D1 is cheaper at $31.99 vs $205 for the Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black Onyx.
Buy the Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black Onyx if you want the best performance in this comparison. It scores higher overall and is the recommended choice for most buyers.
Choose the Oral-B iO3 Series 3 Luxe Electric Toothbrush w 3 Modes - White - , D1 if budget is your top priority — it offers competitive specs at a lower price point.
Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black Onyx lasts longer with 14 hours vs 10 hours for the other.
Reviewed by VersusMatrix Editorial Team
Last updated: May 21, 2026
Methodology: AI-powered analysis of technical specifications from manufacturer data. Scores are calculated by comparing products across multiple dimensions and normalized relative to the full category database. Our editorial process is independent and not influenced by affiliate partnerships.