The iO6 cleans my teeth very well, but it has 2 big flaws. The battery life is short and erratic (sometimes only a few days), even though it's new. And it has a bright light near the brush head that flashes in your eyes, which is horrible, especially at night. While the colours of the lights can be changed, the lights cannot be switched off. A firmware update to change that would raise my rating to 4 stars.

This is the best toothbrush I have ever bought