I have been using this been for about two years and have all good things to say
about it. It's thin in the hand but still carries enough balance to make for a
smooth writing experience, although I wouldn't recommend it for extensive
writing, e.g. a letter or journal entry. I use it mainly for my checkbook
register and my Moleskine planner. The ink flow is smooth on the blue .4 refill
but on the dark side, which is how I like it. Just be careful on the paper you
use - it tends to bleed on lower-quality, thinner paper. Since the ink flow is
so smooth, little pressure is needed to actually get the ink on the paper.