Bests & Worsts Reviews from Amazon

I am concerned these are not real Nimbus brushes, or the quality has taken a serious turn. The brushes from this supplier appear to be manufactured more crudely compared to others I have used in the past. My dentist gave me a couple of brushes and I notice that the handle was smooth and manufactured more precisely -- the Nimbus logo was also clear -- and the brush was softer. Not sure these are real Nimbus brushes.