They are very good quality pens. I own many Prismacolor products, but this one is new to me. Getting the hang of how to use the chisel tip is a little bit of a challenge. I noticed when making a color chart hart for myself. A few of the colors are very similar. They did bleed on special marker paper that advertised they would NOT bleed. Prismacolor needs to recommend a paper suitable for these markers. Depending on the type of paper used the color can change drastically......the hue or shade.