Qualitatively, the brushes are top. Original von Braun. Therefore, no concerns. However, I have them clean along with the standard Precisious and the depths-cleaning brush in use. Although you feel slightly different. But after I had previously used for a while the only Precisious Clean brushes I can somehow not notice any difference here. I can not understand that these brushes are better or stronger whitening effect would be achieved when using the default - brushes from Braun. I use the brush together with the Braun Oral-B Professional Care 600, which is for about 30 Euro. As a toothpaste in the test on each of them I have two different toothpastes Whithening of Odol and Colgate used. Perhaps this brush achieve higher effect than with the standard brush with other electric toothbrushes or toothpaste from other manufacturers. In this combination, but does not do it. Therefore they are qualitatively good, but not worth their extra cost.
