If you are struggling to find the perfect eyeliner then look no further than mac! I only tend to wear a little bit of eyeliner under my bottom lash line for a bit of definition... I use mac teddy which is a gorgeous slightly shimmery dark brown which is a little softer on the eyes than some harsh black liners are. However I like to wear black if I am going out. The eyeliners are really soft and almost have a creamy texture that is easily smudge able if you want that smokey eye look.
The price is a little pricey for a liner if you are comparing it to rimmel price however the quality cannot be beaten. The only real quarm I have with it is that it doesn't seem to sharpen very well which is annoying especially if you want a sharp point. This could be down to the type of pencil sharpeners I've used though!

In a nutshell I definitely recommend this eyeliner!