In a Kassensturz test, the Philipps Sonicare DiamondClean 9000 was initially rated as the worst product. A little later it was placed in the midfield. The reason for this was the inadequate bristle rounding. The subsequent better ranking was due to the fact that a counterfeit product was recognised! The product tested was purchased from Galaxus Digitec. Do I now have a counterfeit in my house?