@hazardwarning I don’t actually have any of those! I have Diamine Saddle Brown and Sepia, Iroshizuko yama-guri (which is my everyday ink), J Herbin Café des Îles, and Prout’s brown. Also walnut ink, which I love, but it’s not nice to fountain pens. I wanted a waterproof brown that would at least be ok to put in a cheap fountain pen, so I can use it for sketching and not have the entire page dyed if I use watercolour over the top.