Confession: I have a desk drawer filled with gel pens in a variety of colors (think neon pink, shimmery gold, deep black and beyond). I use them to write birthday cards for my friends and for my ...

At its most basic, a pen has to do just one thing, but there are so many reasons to choose one over another. Does it glide along the page, or does it drag? Does the ink flow in a smooth line, or is it ...