Uniball Signo 207, 0.7
It was okay on Moleskine, but it actually turned out to be absolutely perfect for my Travel Journal. So I stopped using it in Moleskine. 0.7 nib works better on thicker pages.
Pilot G-Tec - C4
Pilot G-Tec - C4
Definitely better suited to drawing. Too fine for continuous and speedy writing. It's not bad, but it just doesn't flow as smoothly as I would like. As most of what I do is write, I won't be buying any more of these.
Pilot G2-0.38
Pilot G2-0.38
Good pen, but again, bit too fine for my purpose. This is the one I am currently using, and I am almost out of the ink. But even after the usage, it's not completely smooth flowing.
Pilot G2-0.5
PERFECT. I love it. This is definitely THE PEN for Plain Moleskines. I believe it so much that I have bought packs of 12 refills for my Black and Blue pens. I know someone mentioned in the comments in the Test post that after some usage the ink will flow smooth (I had complained that it wasn't), and they were right. After I used it for a bit, it was perfect. Easy to hold, fast to write, flows on the page, and doesn't mess up handwriting. I can see now why everyone always associates this pen with moleskines.
Pilot G2-0.7
Okay, but same principle as Uniball Signo. 0.7 is slightly too thick for thin pages of Plain Moleskines. It's usable, but it's better suited to thicker pages of other journals.