The lack of Zebra and Pentel, over representation of Uniball and felt tip, as well as no Fisher narrows the capabilities of the options. The Uniballs are going to smear for a lefty, the felt are going to have the tip degrade and be inconsistent across paper types, the fat pens are more difficult to position the start/stop on the ruler or lettering guide, so the Bic Cristal or the Pilot G2 are the best choices, but I have no experience with Sharpie Gel.