So last June I bought the 15" rMBP. A few months after I got it, it suffered from extremely bad image retention (LG display). However, I was unable to send it back until the semester was over as I'm a college student that uses it daily. In early January I sent it in and Apple replaced the display. When it was sent back to me, the new (Samsung) display suffered from very noticeable LCD Muras. I again had to wait until the Spring semester was over to have this fixed. So in early May I sent my rMBP in again to be fixed. Apple replaced the display again and sent it back. Upon receiving it, I noticed this computer had the oh so common "yellow tint" issue that neither of my other displays had. Normally I would try to overlook this, but given that I paid over $2,000 for a computer that emphasizes the display, and that specific part is what is giving me all my troubles, I didnt. So 2 weeks ago, I once again sent in my MacBook to be repaired. When they received it, I was notified that they were having a hard time replicating my issue. They then sent my computer over to the engineering department. The engineering team I suppose noticed the offset color and replaced the display once again. So yesterday I received my computer back now on its 4th display and it looks no different than the 3rd, very yellow and annoying. Upon calling Apple I was transferred to Customer Relations. The lady said they were going to replace my computer with a brand new one. I chose to go the route of letting them put a hold on my credit card so I could receive the new one first, transfer my data, etc. Then send the old one back. My only worry is, what happens if Apple charges me this $2,000+ for a new computer, and when they receive my old one.. they say they couldn't "replicate" the issue. I would have already opened the new one.