I use this eyeliner.

This is the eyeliner I've been using lately. It's the Kiss Me Smooth Eyeliner that many people use, and I found out that Kiss Me actually has a variety of styles. I decided to give it a try because it was the cheapest option, and I think it offers great value for money. If I apply it over eyeshadow, it doesn't smudge and lasts a long time, but if I don't have eyeshadow on, it does smudge a little. It does require a bit of knack, but it's decent for the price. The color is also natural, so it's great for daily use.