I use several diferent brushes, I explain it in that two articles :
http://miniaturefootball.org/2009/11...ng-for-battle/
http://miniaturefootball.org/2009/10...t-and-brushes/
the "pin stripping" technic I use is not so difficult. You have to make a fluid mix of black ink and black paint, an use a very sharp brush (3/0 or 5/0). You make black lines between the diferent colors aeras, to add detail and make better contrasts. It's an "old school" figure painting technic.
Basically, I use that 3 brushes, wich I can consider essential. Sometimes, I use a 0 brush and a 1 brush, and very rarely, a very short hair 000 special brush.
dimitri