I've been reading about the 15" rMBP display issues lately (i.e. IR) and have a few questions. I am hoping to purchase a new 15" rMBP from the apple store this weekend, and based off of what I have been reading I should hope to get one with the Samsung display. So, is there any way to tell if it has a Samsung display before making the purchase? For example, based off serial number on the box, or some other identifying mark? If not, how do I tell what kind of display it has once I have purchased it? If I get one that is an LG, if I want to trade it in for a Samsung, can I simply take it back and ask for an exchange and hope that it has a Samsung display, or does there actually have to be a problem with it for them to make an exchange? Really can't wait to get this laptop... sounds like an amazing piece of technology.