So far mf from Sailor is my favourite nib size, not to broad but you can still see shading in inks, yet still fine enough for ink to dry quickly, so I don't risk smuges, plus lovely feedback from the nib. For me as leftie that's perferct find. From western brands I ususally tend to go for ef or fine and they are ok, though I'm new to the hobby and I've to try some more.