originally several years ago there was this type of hair which was rare and very expensive called two band badger. it's qualities were radically different from normal silver tip and only a few outfits were able to get it. Plisson and Rooney maybe Simpson. A typical brush was close to $300 depending on size. This type of hair is not available anymore. Some say it's Global warming and the badgers don't produce this hair anymore. What goes for 2 band now is totally different and is much closer to normal Silvertip. About the closest I've seen to the old stuff is the Thater and the Simpson Manchurian but it's still not the same by any means.
The old stuff has plenty of backbone yet is pretty soft but not floppy at all actually a tad scratchy. It's hard to describe.