This was my first experience with an electric toothbrush. It was one I had seen a commercial for online, and decided to try it out. When I got the brush, I could already tell it was an inferior product. There are a few things you will notice right away as major drawbacks. The casing for the brush is made of a cheap plastic, that I'm pretty sure if you accidentally dropped, it would shatter into several pieces. The brush is also operated by batteries, which adds extra weight to an already bulky design. Speaking of the batteries, make sure you buy plenty of back ups. The brush drains batteries like crazy, which makes the overall cost of this brush even more. Also when the batteries start to die, the power of the brush drops significantly. This product comes with two types of brushes, and replacements can be bought separately. I never really gave this brush enough use to warrant replacement brushes. If you're looking for a good quality electric brush, I would stay away from this one. Instead opt for one of the ones made by Oral-B. Performance/Cleaning It cleans decently. The only draw back is that the power dies down when the battery starts to die. And this brush drains batteries super fast. Durability It feels cheap. The casing is made of a thin plastic, that would most likely crack if dropped.