I go through a lot of black sharpies over the course of a year so I generally buy them in bulk when school supplies are on sale in the fall. This year I thought I would take a chance on the cheaper Staples version and so far the quality seems to be on par with the more expensive sharpies. Definitely a better value!
They write on all surfaces they don't bleed they don't dry out they seem to last forever just an all around great marker. Also you can't beat the price.