These pigma micron pens are my favorite choice for tracing stitchery patterns onto fabric.
They make a very thin line and do not feather or bleed. The brown pen is the best general use pen as the line made with this shade covers easily with most floss colors. The red pen is wonderful if you are tracing a pattern to be done in redwork. The black is my miscellaneous one...I plan on doing a pattern using black floss only, at which time I will use this pen to trace with. These pens are sure to become one of your staple items.