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depends on the job. usually black pen, but a pencil is best for puzzles.

Pen, i havent used a pencil in about 3 years lol...

No. 2 pencil (wooden) ~

I make too many mistakes for pens D:

pen

except when im doing a crossword, then its a pencil with eraser on the end

Gel Pen .. to be precise :)

..but we engineers to have a thing for the good ole' Pencil :)

Pencil that is sharpened with a inch of its life.

Love pencils

Pens.

Pencil because I always mess up lol

Fountain Pen For Me :)

Pen, because it's stronger than the sword.