What's the best waterproof liquid liner? I've only used MAC's and it's far from waterproof. I like the blackness of the black and the shape of the brush, but towards the end of the bottle, the brush always gets frayed and blunted, making it very difficult to get a sharp point (since I always do cat eye, this is important). And if my eye tears up even a little bit, whoa, it's all over the place. It's surprising because MAC generally makes great products...