I think either i have been very lucky or its the normal, but badger brushes have not changed that significantly for me (new vs 20 uses). I have heard stories of some brushes completely changing with use, but in my opinion the real differences are minimal and more about feel.
I dont think they can go from 1 to 10, with break in.
But they could get from a 7 to an 8 or at most, a 9 (on extreme cases when it changes a lot after break up). Moral of the story is, the change is not as big as you might have heard, a point or 2 in the ratings scale at most, not anything like 4-5 points difference).
DanLaw and
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