Any Omega or Semogue boar will be a great brush, and they both have offerings that are under $15.00. In the 20ish range, you can pick from several Vie-long horse brushes. You could get a cheapo badger for that, too, I just tend to think that it is better to get a really good boar or horse that you'll keep for years, even if you end up collecting a number of brushes, vs a mediocre badger that you'll never use again if you buy a more expensive one down the line.