Try Stila waterproof eyeliner, or Smashbox Limitless eyeliner. The Stila liner is my absolute FAVORITE!

I love Napoleon Liquid Eye Liner! I love how it is very easy to use, it has a precise tip which glides on smoothly and its waterproof - no smudges.

Lancome artliner is great

I'm a big fan of stila as well!

Make Up For Ever Aqua Eyes Liquid is amazing. It will not budge and has a great tiny point for getting on the eyeline.