What eyeliner is the best for REALLY sensitive eyes?

I know, I know...I'm like the millionth person to ask this, but I've tried most of the brands mentioned in the other questions. I've tried drugstore brands (Almay, Revlon, Rimmel, etc..) and also SOME department store brands (MAC, TooFaced, and most recently Pur Minerals, which was recommended by the employee at the store) and I've also tried Avon. It seems like most of them are okay for awhile, but after a couple hours or a couple uses at most, my eyes just get irritated again. I want to know if anyone has tried any other brands that have worked for them. I've come to the conclusion that I'll pretty much spend as much as I have to in order to find something that doesn't irritate my eyes after a few times. I prefer the automatic pencils, but I'm open to regular pencils or even liquids too.