I understand the whole "too soft bristles fall out" no. The brushes I find better than the original. Are softer but not overdone and cleaned very well. For longevity, I can not say anything yet. The star deduction there however for the leaflet on which you will be asked in a very bad German to, but please leave positive feedback to leave (4 or 5 stars) and please no neutral (3 stars) and should not be satisfied, so I think I've deciphered it correctly, one should forgive please wcf.itrader.ratingOverview (1 or 2 star), because you can regulate that. That shows me actually only the one is not convinced of his own product. Maybe I had my first brush even luck. If this is the case, I'll edit the review again.