I deliberately choose to draw with rOtring pens because they deliver a deep, full black, giving the illusion that the ink is on the paper. What I appreciate about rOtring is that this full black, even over time, remains the same and does not fade. I have also tried working with fine markers, but they give a gray appearance because the ink flows out more. The precision and consistency I achieve with the rOtring pens are essential to my work.