My co-worker bought a brand new rMBP 15 decked out with the top spec at the time, came with extended apple care, totaling over $4k. After having it for a few days, he complained about a dead pixel on his beautiful screen. So Apple replaced the screen for him. Just a few weeks ago, he asked me to work on his MBP and I pointed out to him that his new screen now have 3 dead pixels. LOL, those retina screens are not lasting long.
Also, this guy wanted to play games on his rMBP because he saw me play games on my Dell M4700. So I installed some games for him. He fired one of the games up and within 15 minutes, his rMBP reports temperature nearing 95 celcius on his Nvidia GPU. On the other hand, my M4700 is just chilling at around 60 celcius on its Quadro K2000M for over 3 hours of constantly gaming. I told him to quit the game before his MBP gets on fire.
BTW, for those who doesn't know, if you buy a Dell precision laptop, it comes with Dell onsite warranty. That means, Dell will have technician to come to your place for any thing, including replacing the screen. You don't have to drive your car down to an Apple store. Fortunately, I haven't had a chance to use my Dell warranty yet on my M4700. But my co-worker is about to make another trip to the Apple store for the 3rd retina screen.