A very respected name is Mack Brush, Jonesville Michigan. Lots of literature too, I am real close to them. Walked in, showed some interest and bought a brush. They gave me magazines and other stuff. Around here there are a lot of people who learned from and travelled with the late Charlie Buzzard. Their preferred brush is a no. 00, I think, with a special cut done by the pinstripers. A piece of glass and some thick oil paint (rustoleum) is a good way to practice patterns. Brushes need special care. A good life for a single guy that wants to travel, or a settled guy that doesn't want to be too busy.
Scott