I am addicted to eyeliner. I need to put it on everyday otherwise I feel naked. I'm without makeup only at the beach and at home. I love to try different brands and see what's great for the money. So far I've tried Loreal, Benefit, MAC, Maybelline, Revlon, Rimmel, Avon, Chanel, Sephora brand, and so on. I need to have my "cat eye" and have the line stay on for at least most of my day which is about 10 hours. My eyes tend to get a bit watery from waking up early and allergies. So that means my eyeliner needs to stay put and water resistant or proof is the best! My 2 most favorite eyeliners are Revlon Colorstay Eyeliner which you can buy at your local drugstore or online and Benefit's, They're Real Push-up Eyeliner. I've been using Revlon for years and it never fails! It's my number one because, it's cheap, stays put, and you can smudge it too. I'd say Benefit is my second best since it also lasts long and is precise. But sometimes a little comes off during the ending part of my day, so I need to reapply. It's also a bit pricey. What's your favorite eyeliner?