I just got a Short Loft Silvertip from TGN.
I love this thing. It's so soft, but not floppy at all. It's amazing. I've stayed away from Silvertips because I don't like floppy, and when I got a best badger knot, it was floppier than I like. So I didn't bother with Silvertip until I saw this short one. Man am I glad I tried it.
I'd recommend sticking one of these in your next brush restore. Great little knot. It's 24mm x I wanna say 57mm but I can't remember for sure. It's Fifty something.