Hi everyone, After my latest dental cleaning, I've decided to switch to an electric toothbrush. I have a few friends that have Sonicares and they love them, but I looked online and they are quite pricey. I'm wondering if there is any real difference in "cleaning quality" between some of the pricey toothbrushes like sonicare and the cheap brushes like this one: http://www.amazon.com/Oral-Vitality...ID0M/ref=sr_1_2?ie=UTF8&qid=1228443925&sr=8-2 Obviously it seems like the more expensive ones would be better, but I know that with some of these products you are just paying a lot for marketing and extra features that don't really make a difference. So, if I'm only concerned about getting a good clean, should I spring for one of the expensive brushes, or are the cheap ones just as good? Thanks.