[e2e4]

I've tried iPad Pro; but went back to using frixion (erasable) pens: http://frixion.jp/lineup/

my favourite being the 4-color (w/ variety of colors to choose from) with very fine line 0.5 mm: http://www.pilot.co.jp/products/pen/ballpen/gel_ink/frixionb...

p.s. could be combined with even finer line 0.38 mm from this pen costing ~ $1.5 : http://www.pilot.co.jp/products/pen/ballpen/gel_ink/frixionb...

For more official occasions these ones are nice: http://www.pilot.co.jp/products/pen/ballpen/multi_color/frix... http://www.pilot.co.jp/products/pen/ballpen/gel_ink/frixionb...

[fmoralesc]

0.5/0.38 a very fine line? I'm using Staedtler pigment liners which are 0.05. The downside is that my handwriting has become positively tiny...

[QuarterReptile]

0.5 is pushing it, but for normal size writing 0.38 is a sweet spot of fine for most people. I use a 0.3, and I immediately notice bad paper because it becomes somewhat scratchy. This is in gel pens.

Looking at jet pens, yours seems to be a marker pen, which generally needs to be thinner so it won't bleed. Similar to how ball points need to be fat (0.7mm is called fine) to write smoothly and make a dark enough line.

[angry-hacker]

Why specifically this brand? Is it special, and is the difference between an avg random pen big?

[tass]

Frixion pens are erasable.

The ink turns invisible when heated. The pen has a rubbery tip on top which acts as an eraser when rubbed on the ink.

[plttn]

You'd be surprised. Pilot G2 is a great writing pen, and I'm personally a fan of Uniballs.