I got this in Espresso Ink, and the color is so simple and beautiful! It applies smoothly with an eyeliner brush. I really like how it's waterproof, especially with the hot weather right now. My only complaint is how some of it falls down to my lower lashes and ends up giving me the slightest dark residue. Other than that, well worth the money, especially since it lasts me over a year!
I've been using this gel eyeliner for over 10 years and it's a staple of my makeup regimen. It's long wearing, richly pigmented, and a little goes a long way. This little pot can last for quite a while. I've tried a few other potted eyeliners, like MAC, and I always end up coming back to this version.