Looking for an honest Oral-B iO Series 5 Limited Electric Toothbrush w 3 Brush Heads BLACK opened 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 55/100 to 68/100 — a 13-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 5 Limited Electric Toothbrush w 3 Brush Heads BLACK opened undercuts the Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black Onyx by 193% ($70 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 5 Limited Electric Toothbrush w 3 Brush Heads BLACK opened in the electric toothbrushes category, especially in performance, scoring 68 vs 55. 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 5 Limited Electric Toothbrush w 3 Brush Heads BLACK opened means trading these off.
Oral-B
$70
Oral-B
$205
Scores are relative within the electric toothbrushescategory. Percentages show each dimension's weight in the overall score. A difference of less than 0.5 points is considered a tie.
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✓ Pros
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| Spec | Oral-B iO Series 5 Limited Electric Toothbrush w 3 Brush Heads BLACK opened | Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black OnyxW |
|---|---|---|
| Price | 70$✓ | 205$ |
| Battery Life | 10hrs | 14hrs✓ |
Buy Oral-B iO Series 5 Limited Electric Toothbrush w 3 Brush Heads BLACK opened if…
The Oral-B iO Series 5 Limited Electric Toothbrush w 3 Brush Heads BLACK opened 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 5 Limited Electric Toothbrush w 3 Brush Heads BLACK opened in the electric toothbrushes category, especially in performance, scoring 68 vs 55. 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 55).
Oral-B iO Series 5 Limited Electric Toothbrush w 3 Brush Heads BLACK opened is cheaper at $70 vs $205 for the Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black Onyx.
The Oral-B iO Series 5 Limited Electric Toothbrush w 3 Brush Heads BLACK opened 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.
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.