Being a nursing student, I am in frequent need of jotting down random notes during classes and clinical. I jot down vital signs, the room number I need to attend to, an important fact my professor states during a skill demonstration, or even just for doodling. Ever since I found out this little gem two years ago, I've been using these ever since. I've had a two black ones and a red one, and all of them trustworthy. My favorite inky pilot G2 pen rarely bleeds through the page and is only faintly visible on the other side, but it does not impair your reading at all. It does not smudge as long as you let the ink dry for a few seconds. The back pocket in the moleskin is very handy for little cheat sheets (not for tests, mind you, but for skills during clinical) and even fits 3x5 notecards.