I love these pens! I'm addicted to organizing and using a planner, and these are fantastic for that! They don't bleed (unless you press obnoxiously hard,) don't smear, don't smell, and don't dry out easily. Every pen seems to write as smooth as the next, and the color variety is great. I only wish they came in a better case - the one they come in is annoying and doesn't hold up. The tops of the pens don't always snap onto the back easily for when you are writing, which can be kind of annoying, but definitely not a deal breaker.