As I've gotten older (I'm 35 now), I've noticed that the skin on my eyelids is a bit looser than it used to be and the eye pencils I used to use pull more and don't go on as smoothly as they used to. The NYX mechanical eye pencils (but not their regular eye pencils) goes on as smooth as silk! I like that it goes on thick/wide, but if you want something precise, this isn't it. It doesn't smudge easily and truly stays on all day. I did have one pencil that only twisted out about 1/8 inch before the mechanism got stuck (I had to throw it out), but with the low cost and high performance, it didn't bother me much. I'm used to using MAC and Clinique pencils ($18+), so if I have an occasional dud with this brand, it's still totally worth it!