It is the marmite of toothbrushes - you either love it or hate it. It vibrates a lots which some people find annoying and unpleasant on the gums. I have one child who loves it, and one who will only use the Oral B circular electric toothbrush. The cleaning of the sonicare is outstanding, and the childrens' dentist says the teeth of my child who uses the sonicare are much much cleaner with healthier gums, than the one who uses the oral B toothbrush. I have tried the sonicare myself, and sadly I too fall in the 'hate the sensation' category, but if you can get used the feeling the cleaning is unrivalled. It's best to start them young on this one, and get this first, before they get used to another brand of electric toothbrush.