MBren

No, we don't have any technical data to share about the comparative power of the different Sonicares. This is not information that Sonicare reports.
We think what you state about your experience with the 5100 reflects the general state of affairs. You found a $90 brush (the 5100, MSRP) to have less power than what you were used to with the HealthyWhite+ ($120 MSRP). We think MSRP price is the best indicator of relative performance.

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