I've gone through just about every type of eyeliner you can imagine. But they always smudge, wear off, or give me raccoon eyes. My eyes are very almond shaped - very pointy at either end - and my lids are also hooded with a crease. Every eyeliner, except for a few liquid ones, would smudge onto the upper part of my eyelid (where the "hood" is), congeal in the corners, or come off completely. This is one of the first eyeliners that doesn't do that. Well, it can congeal sometimes in the corners since my eyes get really watery, but it won't happen until ten or twelve hours of straight wear. I've even gone in a lightly chlorinated pool with the eyeliner on, only to come out with it still looking perfect!
The brush it comes with is little, but I enjoy using it. But it's easy enough to use a larger brush if that's what you are more comfortable with.
This is going to be my go-to eyeliner forever!