Who has an electric toothbrush & what brand do you have? I have a Cybersonic that I've had for about a decade that I think back then I paid $100 for & I like it, but I'm getting tired of having to order the extra brush heads (& pay for shipping) online. No store carried that particular kind for years. What high quality electric toothbrushes are good where I can easily get the replacement brush heads at any drugstore? I see a lot of different brands out there, but I want to see which are more popular/highly favored? Thanks!