So I'm a big fan of Make Up For Ever's Aqua Eyes eyeliner.  It's definitely the best eyeliner that I've tried since it doesn't smudge or run and yet still manages to provide some decently pigmented color and this is exactly why the Travel Holiday Set is fantastic.  You get FIVE of the best shades for only $49!  I also love the travel size metallic case that they come in...makes it very easy for travel.