Looking for an honest Oral-B iO Series 6 Luxe Electric Toothbrush HANDLE Rechargeable Black Lava 3758 vs Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black Onyx 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 59/100 to 68/100 — a 9-point gap. The widest gap is in performance, where the Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black Onyx pulls noticeably ahead. On price the Oral-B iO Series 6 Luxe Electric Toothbrush HANDLE Rechargeable Black Lava 3758 undercuts the Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black Onyx by 268% ($55.75 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 edges out the Oral-B iO Series 6 Luxe Electric Toothbrush HANDLE Rechargeable Black Lava 3758 in the electric toothbrushes category, especially in performance, scoring 68 vs 59. 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 iO Series 6 Luxe Electric Toothbrush HANDLE Rechargeable Black Lava 3758 means trading these off.
Specs are roughly matched — winner decided on overall scoring, not a specific spec advantage.
Oral-B
$56
Oral-B
$205
Scores are relative within the electric toothbrushescategory. Percentages show each dimension's weight in the overall score. A difference of less than 0.5 points is considered a tie.
✓ Pros
✗ Cons
✓ Pros
✗ Cons
| Spec | Oral-B iO Series 6 Luxe Electric Toothbrush HANDLE Rechargeable Black Lava 3758 | Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black OnyxW |
|---|---|---|
| Price | 55.75$✓ | 205$ |
| Battery Life | 14hrs | 14hrs |
Buy Oral-B iO Series 6 Luxe Electric Toothbrush HANDLE Rechargeable Black Lava 3758 if…
The Oral-B iO Series 6 Luxe Electric Toothbrush HANDLE Rechargeable Black Lava 3758 is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.
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.
Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black Onyx edges out the Oral-B iO Series 6 Luxe Electric Toothbrush HANDLE Rechargeable Black Lava 3758 in the electric toothbrushes category, especially in performance, scoring 68 vs 59. If you want the better overall electric toothbrushes, Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black Onyx is the recommended choice.
No, Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black Onyx scores higher (68 vs 59).
Oral-B iO Series 6 Luxe Electric Toothbrush HANDLE Rechargeable Black Lava 3758 is cheaper at $55.75 vs $205 for the Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black Onyx.
The Oral-B iO Series 6 Luxe Electric Toothbrush HANDLE Rechargeable Black Lava 3758 is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.
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.
Both offer 14 hours of battery life.
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.