OK, Min, get the point? The best toothbrush is the one you're going to use, whether it's a manual, Sonicare, or an Oral B. I use the Sonicare Diamondclean once daily, the Oral B once daily, and I floss like it's going out of style. Then I also use the proxabrush for brushing between my teeth. Like I said, your health depends on it. Am I overly fussy? Sure, but if my dentist says that if I didn't tell him about my smoking, he'd never know it, then I figure I'm doing a pretty good job. There's no reason you can't do the same. And by the way--your dentist/aunt was giving you a subtle that she knows you smoke--you just didn't pick up on it. There isn't a dentist on this planet who can't tell the difference between a coffee and a tobacco stain.