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Pick 2–4 products of the same type. The verdict is built from their actual numbers, not written in advance — and the link carries your picks.
Comparing 2 of 4
Oral-B iO Series 9 · 199 €Philips Sonicare 9900 Prestige · 229 €
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The value of a comparison is the differences.
| What matters | Oral-B iO Series 9Oral-BMedium confidence | Philips Sonicare 9900 PrestigePhilipsMedium confidence |
|---|---|---|
| Worth Score | 7.5 | 7.5 |
| Best price | 199,00 € (best in this comparison) | 229,00 € |
| Confidence | Medium | Medium |
| Price fairness | 6.4 (best in this comparison) | 5.8 |
| Build quality | 8.4 | 8.6 (best in this comparison) |
| Performance | 9.6 (best in this comparison) | 9.4 |
| Longevity | 7.8 | 8.0 (best in this comparison) |
| Repairability | 2.8 | 3.0 (best in this comparison) |
| Support & warranty | 8.0 | 8.2 (best in this comparison) |
| Modes | 7 modes | 4 modes, 3 intensities |
| Battery | 12 days | 14 days |
| Pressure sensor | Yes, three-colour | Yes, with auto power adjust |
| Head cost / year | ≈ €55 | ≈ €60 |
| Travel case | Charging case included | Charging case included |
| Best for | Measurable plaque removal · Coaching yourself into better technique · Gum health tracking | Sensitive gums · People who brush too hard · A genuine upgrade over manual brushing |
| Avoid if | You find app nagging exhausting · You dislike oscillating brush heads | You are cost sensitive — heads are pricey · You want a simple two-button brush |
| Main drawback | Heads cost ~€55/year | Replacement heads cost ~€60/year |
Verdict
The Oral-B iO Series 9 wins on both score and price.
Across these 2 toothbrushes, the Oral-B iO Series 9 has both the highest Worth Score (7.5) and the best score per euro at 199,00 €. That is unusual — normally you trade one for the other. Its weak point is heads cost ~€55/year.
Best overallOral-B iO Series 9 — Highest Worth Score here at 7.5, tied with the Philips Sonicare 9900 Prestige. Best for measurable plaque removal.
Best if budget is no objectPhilips Sonicare 9900 Prestige — 30,00 € more than the Oral-B iO Series 9 and level on Worth Score. Best for sensitive gums.
Prototype data — prices and retailer stock are a fixed demo snapshot from 28 July 2026, not a live feed.