In reply to Urban5teve:
I actually got one of the Silly Goat brushes, the smaller Jack The Lad, and it's pretty rad.
Hand made to a high standard using Oak and Boar's hair. Each one is numbered and logged and can be refurbished when the bristles have worn down.
And the pièce de résistance, it removes the excess chalk from both plastic and rock.
Yes, pricey but totally worth it. Check them out on Insta @sillygoatholds