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I hope this chart helps you all.
I have individually reviewed most of them. The links are in the chart.
The important thing to notice is the mechanism. Clarisonic became famous due to the results people were achieving, as a result of its mechanism, oscillation.
Clarisonic is the HG. However, it is very pricey. NutraSonic is an excellent alternative. That’s the one I have and it is wonderful. I couldn’t be happier. It actually cleans better than the Clarisonic Mia, because it’s a 2 speed, not a one speed.