I have both a BK4 and BK8 that I've had for many years now. Recently, I was looking to see what was new in their line and it appears that badger is no longer and they're all synthetic. What did I miss? The BK4 and 8 are two of the worlds great silvertip shaving brushes do just fine on soap pucks (like Mitchell's Wool Fat). They are my two favorite brushes (also have a Super Badger Edwin Jagger, Rooney made T&H, and Vulfix Grosvenor (badger and boar mix).