Let me introduce you to my current favourite eyeliner: the Maybelline Master Precise Curvy. I know, it's kind of a spoiler to already tell you that I love a product before even starting my review, but it also signals that this product is worth your while. Let's get started.
The Master Precise Curvy pen has a rather peculiar shaped tip, rounded and curved and slanted and cinched. And while I might have shrugged off its unique shape as special snowflake posturing, trying too hard to stand out, I have to say that the shape is AWESOME. It makes drawing a good, sharp cat eye super easy, and it allows you to create a thicker or a thinner line depending on how you twist the pen. I also think that the Master Precise Curvy has a very pleasant shape to hold in your hand, shorter than most eyeliner pens and easier to manipulate. You'll have to try it yourself to feel how nicely it performs, but I 100% vouch for its shape and I wouldn't change a thing.
As you can see, you can create a nice, fine tip to your cat eye even though the liner may seem thick at first glance. The formula is very much like a magic marker, not runny or watery nor creamy and thick. It dries quickly, with a very black, glossy finish.
I have been using the Master Precise Curvy eyeliner for about two months now, and it still gives a perfectly saturated, black line and has NOT dried out, not even a bit. The eyeliner also stays on perfectly, it's very smudge-resistant and remains flawless throughout the day. If you have rather oily eyelids, I'd advise you to use a primer and/or eyeshadow underneath, but I have had no smudging issues. Love, love, love it! And considering its very wallet-friendly price tag, at just €9.99, this eyeliner hits every mark. Total recommendation.