Very good machine to screen problem crumbling and a dreadful sav, here is my story: I bought a macbookpro retina there ca few months. Oddly coating the screen of my hand to pieces as it touches the metal part of the shell (or there is the keyboard). This problem appeared just after another problem: the sd drive does not work (as on all macbookpro of all my friends and family). Being still under warranty, Apple does not support the repair because my computer has some shock and wonder 680 just to repair the screen. Seeing very well that this is only a way to scroll their manufacturing defect (which is not isolated after the seller of the Apple store) Caught in a sudden anger, I called apple . After 12 minutes of waiting, a gentleman very balance symathique me: "ok I see your problem, what do you want me to do?" So I told him I wanted it repaired my computer just because the shocks have absolutely nothing to do with the coating of the screen which then crumbles starting again with a vengeance "How do you know? You are technician ? Because if you're going to repair it alone! " So, I asked him to talk to one of his superiors, he simply replied "Yes! And then what?" And hung up. Sympa. And my work tool is still not repaired.