Yup, I have been using E

Yup, I have been using E-Series brushes on the old handle. I'll read through the pages again to see how much I have to spend for a stronger one. I called Sonicare and was told they all have the same power but the customer service agent probably was confusing power with frequency.

I have some small accelerometers and am tempted to actually measure the difference between the old and Essence+ and the one I try next. But like you said, it only need to be strong enough to do the job.

Thanks

Rob

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