For the third time (!) Defective after about 26 months

The cleaning performance of the toothbrush is very good - this there is in other reviews already many comments. I have been obsessed with no toothbrush cleans better than this one.

Unfortunately, my wife and me but now failed the third toothbrush. The vibration diminishes abruptly, probably a part is in the toothbrush broke due to vibrations. All three toothbrushes, this effect occurred shortly after might invalidate its warranty on (2 years).

Priced at EUR 120 for the set, this means 5 EUR costs per month - not counting replacement heads. For this reason I can not give more than 2 stars of the toothbrush.