I have just purchased the Colgate SonicPower 360 battery operated toothbrush.  It is fairly new, and a wonderful toothbrush.  I am the type of person that can't get in the shower without brushing my teeth.  So I brush my teeth in the morning after breakfast, then I take a shower and brush my teeth while showering, and then at night before bed I brush my teeth.  Therefore, I have a toothbrush in the shower and one at my bathroom sink.  I have a manual anti-microbial toothbrush in the shower, and I can definietly tell a huge difference in how much cleaner my teeth feel after using the Colgate...