From left to right:

First, the lowest quality of brushes, the badgers. A pure badger by Edwin Jagger and a custom made silvertip by nib

In the middle, the intermediate quality of brushes, the horses. First a no-name Turkish horse brush, second the Spanish Vie Long horse brush, and then another Turkish horse brush from bestshave.net.

Finally, at the right, the best of quality in shaving brushes, the boars! First a German boar brush, in the middle the Italian Omega 102, and in the end the King of all brushes, the famous Omega 48, the soap killer