OP at some point you might wish to try the SOC (Semogue Owners Club) brushes with the Mistura knots. They're a mix of badger and boar and for me and many on this forum they work very well indeed. Fairly reasonably priced as well if you order them from Portuguese Factory's website.
I have two of 'em and they're tops in my rotation.
I have two of 'em and they're tops in my rotation.