I put the Sakura Micron pen there for a size comparison – the Zebra pen is the same size, while the other 2 are slightly longer.
The tips! The platinum one is white because you actually have to put the ink into the pen yourself. Just a warning – the ink cartridge has a ball stopping the ink from flowing out, and you have to push it down (like the marble you see in Ramune soda bottles). When you do that, the ink splatters around so I would suggest doing it over a sink or some newspaper.
Zebra: It's pretty
nice to draw and write with, and I like that it isn't too thick. It
does get a little “fuzzy,” but I think that might be due to the
paper I was using (index card). On watercolor paper, it did pretty
well. If you use water right after inking, it will smear, but once
it's dry, it is waterproof. The ink is also a pretty solid black.
Overall, I think this is one of my favorites.
Platinum: I have
mixed feelings about this one. One of the turnoffs for me was having
to put in the ink myself, because as I said before, I got everywhere.
Also, even though I screwed the pen back together pretty tight, some
of the ink still leaks out and gets on your hand. If you don't mind
that kind of mess, you might like the pen more than me. After I put
in the ink, I had to shake the pen for a while to get the ink to the
tip as well. However, once the tip had loaded with the ink, I really
liked how I could do both thin and thick lines (although I think
that's only when it was first loading – now it's mostly thick lines
lol) One thing I like more about this pen, though, is how the lines
are cleaner than the Zebra pen. The ink doesn't take too long to dry
either, so you can use it for watercolor paintings. I think the ink
for this is the “blackest” out of the 3.
Sailor: Probably
my least favorite, but still nice. There's 2 ends, but honestly,
there's not much difference between the two, even if one is “larger”
than the other. I actually get more control using the larger end.
Don't think I'll be using the smaller end anytime soon. The ink also
isn't as “black” as the other two pens. However, like the other
two pens, this one is also waterproof once you let the ink dry a bit.
Overall, they're
pretty nice pens! They only cost $1.50 each, so if you feel like
trying out some brush pens, I would probably recommend the Zebra one,
since it writes/draws pretty well and doesn't leave a mess on your
hands. (Don't need to worry about ink leaks in your bag if you carry
it around, unlike with the Platinum).