Urban Decay 24/7 glide on eye pencils vs. Makeup Forever Aqua Eyes Pencil?

I am going to Sephora soon and wondering what would be better. They are both eighteen dollars. I was just wondering what one was more waterproof, because I wear contacts so sometimes my eyes get watery and I don't need eyeliner running down my face in the middle of class (for when school starts). Which one, in your opinion, is better (softer, creamier, easier to sharpen) and which one is more waterproof?