Even though it's my second favorite pen (after the Uni-ball Jetstream 0.7 mm), I love the Zebra because it's so very classy with its metal barrel and luxurious amount of dark ink. It has an even flow and doesn't skip too much on coarse paper (here's to you dollar store post-its). Also, I'm not sure if I hold the pen differently or if the desert has straight burnt my sweat glands off my hands but I haven't noticed any lefty-smudging when used on non-glossy paper. The only downside about these pens is that the ink does not last very long. For example, I'm a student who prefers to write a lot of notes and these pens start skipping after about 2 weeks or so. That being said, I've gladly bought F series refills because these are a dream to use.