Eyeliner is kind of new to me. I have never really been one to use it, as every single one smudged and I could never get it even enough for my liking - the joys of being a perfectionist. I discovered a very nifty eyeliner recently, entitled the 'Blink Waterproof Precision Eyeliner' from Barry M. At £4.59, it's budget friendly and longlasting too, as I've had mine for a good couple of months and it is yet to dry out, something I was afraid of.
The nib is very fine, slightly bendy but not too much. In my eyes, perfection for an applicator. It does take a little practice to perfect a wing, but for a simple line of the upper lashes, it is pretty much idiot-proof.
Everything is perfect about this eyeliner. It's easy to apply, pigmented, dark, longlasting, doesn't smudge and is darn cheap too. There's not much else I can say really. Try it for yourself and see if you agree!