Hi! so I've tried different gel eyeliners and the MAC fluid line is the best I've used. I'll tell you why....first a little bit goes a long way, its very very black, and once you apply it its sets fast and it doesn't stain your crease when you open your eyes or look up. Others that Ive tried always stain or come off if I dab my finger on top. But MAC is my number one product. I work with clients all the time so I need the best. I hope this helps!!!