I absolutely adore these pens! As a teacher and self-proclaimed school supply addict, I am very picky about the pens that I will use and these have become my go-to pens. They write incredibly smoothly, never stick, clog, or stop writing, and dry quickly. The color selection is great, though if I were making the collection, I wouldn't include the yellow as it is pretty worthless. I like both the 0.5 and 0.7 widths, though I think I'm a little more partial to the 0.5s (unfortunately, they are a little harder to find and come in fewer colors). Overall, I highly recommend these smooth writing, comfortable grip pens!