Well, while I had the pens out, I thought I'd do a brief writing sample from each. To me this shows the way the nib handles the ink and the colors that the pens come with as well, so, while it is an ink comparison, I consider it also a review of how well the pen itself can be used as a technique for forming a basis of comparison, ruling out or at least minimizing nib variations in the comparison. Note that several of these are highlighting inks and IMO except for the yellow, can be used to both highlight and to write text in margins. The highlighter inks work well for highlighting smaller print as well and especially for thin paper (Bibles, some medical books like the Merck Manual) reduce bleedthrough since less ink is depositied than with the highlighter tips.

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Ken