Hello, I received my 15" 2.9/1T/460 and I was very stressed at the thought of having worries. I had made my list of items to watch by reading the forum, and I can tell you that I am super happy with the computer, it is just beautiful and very nice to use. So I have any issue. I calibrated the screen and there is very little difference with the factory setting. It replaces my 2009 MBP 17 ".