I have tried a few kinds of electric models and the Pulsonic by far is my favorite. The size is great and my teeth seem to be whiter after using it. Performance/Cleaning I have had two Pulsonics as I wore out my first after several years of use and noticed that my teeth were not staying so white when I wasn't using the Pulsonic. I quickly repurchased a new unit. Durability My first one lasted several years so no complaints. Bought a second after the first one stopped no questions asked.