When I was in Art school, I had a professor (his name was Franck Piateck). He told us to try all mediums: pencils, paint brushes, felt pens... His idea was that at one point, everybody would discover the medium that corresponds to his style. And that is where I discovered the Crystal Bic Pen. 
       Ever since, I have tried and used many mediums but the Crystal Bic Pen always come back as the best.