From the perspective of a university student, this pen is excellent. From
working out mechanisms in organic chemistry to just simply writing (notes or
essays), this pen does an outstanding job.
Compared to the Uni-ball Signo RT UM-138 (0.38), this pen is better built, has a
slightly more comfortable grip, has a much larger volume of ink, and writes with
the same "thinness" (but with a darker black). The RT's black ink always have
looked faded to me and they all definitely run out of ink way too rapidly or
even a mediocre writer/drawer/whatever.
The RT has the "clicker" ability (which I originally wanted this pen to be and
would buy another one if it were a "clicker") but the cap removal process isn't
a big deal. I've actually started to like the look of the cap and the way it
snaps on makes it feel like it's a high class pen.
Overall, this pen is one of the best that I've used.