This portrait of a weird alien was the second pen and ink drawing I did using "professional" tools - a Koh-I-Noor Rapidograph technical pen set that cost me $60. After a few drawings, I realized that I wasted my money. I press too hard for the pens, so after about 3 or 4 drawings, I had broken all the fine-tipped pens in the set. At $25 a pop to replace, I was not very happy. Now, I use Pilot pens exclusively. They cost less than $5 for a bunch, they last a damn long time, and they work great.