Originally Posted by
thebigspendur
First you need to decide what qualities you like in a brush. If boar suites you then go for it. If badger does go for it. I never worry with matching brushes to soaps but since I hate floppy I stay away from those anyway and they can be a bit bit more challenging with a hard soap. However they still work fine.
Boar can be more prickly at first and take some time to break in. The better badgers have backbone, hold water, are softer and usually thicker in the fill dept.
You'll get plenty of opinions here.