Oh man, I would'nt trade my Sonicare for nuthin. I have been using it for about a year and can tell a difference in my gums
Dh has been using too and he is a smoker. It has really helped with stains.
PLUS you can get through DRUGSTORE.COM
Also if you go online to Sonicare and signup for emails they will send you coupons for replacements.

Forgot to tell you it has settings for the senistive and violent ( )