Black point pen tip. If you don't think a writing utensil can be sexy, I present to you the flawless black LAMY Safari fountain pen nib. In the words of my students: If Batman wrote his autobiography by hand, this is the pen he would use.
Medical students are taught - "When you hear the sound of hooves, think horses, not zebras." 'Horses' are common ailments, 'zebras' are rare diseases. is a zebra. The problem is that doctors have forgotten that zebras DO exist.