Carbon Fiber Brushes


I've worn out 2 of these in the last year. Is this normal? Please opine on the best brush out there.
jphii
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I have a little brush shaped like a wisk broom I got from Raskins that is made in Japan. I don't know the brand other than SFC is one the otherwise japenese label. But it works great and I haven't used the carbon fibre since.
Like Dopogue, I've used the Audioquest brush for 15+ years and it still works great. A new Audioquest brush came as part of the "care kit" with my new turntable and it's still in the blister pac - the old one's working just fine.
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My original Decca carbon fiber brush is still going strong nearly twenty years later. I wonder how they make them have such a short life span. Very interesting.