Previously I had a rotating brush from Oral-B I was very pleased with the / bin directory. I then heard many good things about the sonic toothbrushes and wanted to try it once !!! In the beginning it was a completely different feeling, I got the impression that the brush does not quite so hot clean. But that was not true at all, on the contrary. I banished my electric rotary toothbrush as a substitute in the drawer since the cleaning performance is truly phenomenal. I have neither coverings nor discoloration. These were usually always after a short time after the teeth cleaning back and with the new toothbrush there is hardly anything to do. I found the brush convinced it is comfortable to use, ideal for my small hands shaped to get anywhere with it down in the mouth, in short, my perfect toothbrush !!!