In terms of staying power they both last a fairly long time, fading with wear, rather than cracking (I hate how liquid eyeliner does that!) However, I suffer with oily lids and found the Maybelline product transferred, horribly. The Benefit version on the other hand lasts all day without transferring and I would even go so far as to say its a bit of a pain to get off- its THAT waterproof. At £8.99 the Maybelline eyeliner pen is a fraction of the Benefit They're Real's £18.50, however I find myself reaching for the Benefit one, over the Maybelline version, daily. Whilst I think the Maybelline is a reasonable dupe, for the price- the Benefit version really takes the biscuit and I know I will be repurchasing once mine runs out.