Yikes, I recognize this talk of knot size and loft but can't use the language intelligently. All I know is I recently acquired this model, I think it is, of Parker brush and find it suits me well--kind of stiff, bigger than the poor tired wisp I'd been using but not too big. But then I have a goatee (or Van Dyke if you will) and shave around it, so a smaller brush is more suitable for that.

Rich