Hi everyone, This is my first post to FPN and I just have a quick question.... I just bought an Estie Dollar Pen H of Peyton Street which came with a 9550 nib which everyone says is Extra Fine and that is fine. I was looking at nibs and saw that the 9555 is also EF but specifically for Gregg shorthand; I was wondering what specifically was different between these two nibs. Thanks Teddy