Judging by the pure cleaning performance of the toothbrush, I would always give 5 stars, but unfortunately is more to. If it is the third toothbrush which I have to buy me weeks after the guarantee, there is a feeling it will probably be so. If every time you have to spend scarce around 100 times the guarantee must buy again a toothbrush there's just expired, a makes it really more than just angry. And if you still load time (Knappe 24h) looks for an electric toothbrush, one wonders also how can be such a thing?!? I mean my smartphone must do what is significantly more charged in 4-5 hours, only this toothbrush needs a whole day. It will be my last OralB toothbrush because it permanently is simply too expensive for me, exactly as 2 years to have to buy a new one. I will now start to look for alternatives, and hope to have more luck than with a OralB. As mentioned above, you go to the pure cleaning performance and the cleanliness feeling, I would always give this product 5 stars, but it's part of more.