Man am I relieved to hear that the fountain pen addiction is not unique to me. I use fountain pens at work, and have to explain it frequently (engineers don't typically use ink in the first place). citroeniste, I have tried several inks, and the MB seems to flow the best for my pens. Sadly I do not own an actual MB fountain pen yet. Too busy buying other toys I guess. I have one of the Rotring hexagonal fountain pens (don't remember the model). I love the fact that it will only let you put the cap on with the hexagons lined up. I can learn a lot about a persons personality by letting them borrow that pen and watching them replace the cap (or attempt to pound it back on, in some cases).