i have the Kat Von D tattoo liner in Trooper and I really love it. It is easy to use, the tip is very fine, and the color stays put all day with out smudging. I will correct the mod and point out that the tip is not felt tip, it is actually a very fine brush. I just double checked mine and it defientely has individuall bristles, not one felt tip. Hope this helps!
Stila's waterproof eyeliner is great, as someone already mentioned. Although it isn't a liquid eyeliner, Marc Jacobs' Highliner Gel Liner (I think that's what it's called) glides on so smoothly and with precision, it's just as good as a liquid liner.