This article focuses on ink flow, which I understand as important, but my favorite pen is my favorite because of something completely different - the body of the pen.

Personally, I do not like what I refer to as "fat" pens. My favorite pen is a slim model ball point made years ago by Paper Mate. They no longer make it. At its widest, it is not much bigger than a standard number 2 pencil (it's narrower than a Fisher Space Pen). All of the larger, "ergonomic" pens I have ever held remind me of the twice as thick pencils used in pre-school and kindergarten when I didn't have the fine motor skills to hold the smaller pencil - maybe okay back then, but not what I want now.