I actually got this toothbrush for free from the dentist. I was using the Crest battery operated toothbrush and liked having a power brush, but didn't really like the Crest brush. When I got the Oral-B brush I was very excited to see how well it worked. With the crest brush after you've used it for awhile the on/off button gets stuck and it's hard getting the crud out of it, which makes it hard to turn on/off. The Oral-B does not have this problem at all. The on/off button works wonderful and doesn't get crud stuck in it at all. The brush works very well at getting in between your teeth and all...