As someone who wears dipliner almost everyday, I would like to say that I know a good dipliner. Over the years I've tried many different ones, but this one is my absolute favourite. It's cheap and good - what else do you need? Of course it's not waterproof, and if you rub your eyes while wearing it, it will smudge, but it gives me what I need, for a fair price. Love it!
UPDATE (December 2015): LOL at this. Oh myyyy. I can't stand this liner anymore. Plus, this review is for the one from their old range (I don't think they have a dipliner anymore?). This was a nightmare during this summers festivals, smudged so bad, all the time. If you're someone who wears liquid liner a lot and want it to STAY in place, like me, at least get one that's waterproof. I never thought I needed that, but boy I do. Downgrading the review from 5 to 2, and from would buy again to wouldn't.