For my little brother's art projects, my dad went all out, and bought a pack of these things. I know that these are some of the most useful pens for penspinning, and they can make tons of mods, but I wanted to review them first, as pens.
Now to the writing side, I colored in a drawing using a few of them, and was surprised at how vibrant the colors were! Unfortunately, like all Crayola markers, after some heavy usage, the ink wore out of the tip, but after five minutes of shaking the pen, I got it to write.....for another two minutes. This was a big upset for me, because these markers are used for drawings, and they did not live up to their standards as markers.
Pros: Vibrant, SOME smelt good, cheap
Cons: most smelt like garbage, wears out fast, rather hard to make straight lines.