My only brush, a Parker best badger, is losing bristles like crazy. I've owned it for a month, and have done my best to take of it. I was looking at the boar brushes, and they seem to be pretty good. What would be a good boar brush for under $20? Also, I'm looking for a stiffer brush, but it seems like boar brushes are usually stiff anyways, from what I've read.