The ink looks great on any paper

Best art ink-pens I have ever bought, definitely worth the money

The ink isn't as dark compared to other pens and the smaller sizes don't play well when drawing straight lines as they start to fade (inconsistent ink distribution)

Ink doesn't smudge much, dries quick!

These are a great alternative to India ink technical pens like Rapidograph.

Good ink flow, and quality of the ink is very rich

They are archival quality, acid-free inks and the multiple line widths make these one of my favorite go too writing and sketching tools.

The ink is nice and black and they write without skipping

Great but ink runs out quickly

Ink doesn't smear

Smear a lotWhen now using this pack the thinner one does have ink all dry from day it

I use them for Mandala drawings and fine ink art

These pens are great for writing in my Moleskine notebook because the ink is archival quality, dries fast and doesn't smudge

Ink doesn't bleed out quickly

Only reason for not giving a 5 star is because the smallest 2 of the pens don't flow the ink as well and are somewhat dry.

Love these pens, great control and the ink is really nice and black.

The tips seem a bit more durable and have great ink control

If a blacker ink is really important to you, try the Faber Castell Pitt pigment pens.