Signo Gel Pen
These deeply pigmented, acid free inks are great for writing and drawing.
The inks provide excellent contrast without blurring or feathering on most papers.
Rollerball capped pens available in a .5mm fine line or a luxurious 1mm writing line - these are the smoothest writing pens you'll find for under $10.
Each pen has a rubber grip for comfort and a clip on the lid so you can attach it to your notebook or pocket.