Simply put, these pens are amazing. They rival some of the best ball point pens I have ever used because they have such smooth writing. The thickness of a line is perfect and this pen provides a very consistent amount of ink (not runny). However, I would advise you to store the pen in an upright position (nib pointing up) because the other way makes slightly more ink to flow through. The ink dries up quickly and does not smear...the colors are very vivid as well. Also, I have used the pen for a while now and the ink has not runned out quickly. These pens are great for those who have expensive fountain pens but dont want to use them all the time. Plus, they get a lot of attention at school. Bottom line, these are outstanding quality and cheap pens.