I'm taking a long hard look at upgrading some of our early 2011 15 and 17 inch Macbook Pros with the new Samsung 830 SSDs. I recall a couple of months ago OWC published in their blog that these models have issues with SATA III SSDs because of some shielding or EFI issue. http://blog.macsales.com/9754-owc-offers-fix-for-2011-17-mbp-sata-problems Any early 15" or 17" 2011 MBP users out there successfully upgraded to a Samsung 830 (any of the newer gen SATA III SSDs) without any problems? I've read the OWC blog and they say that the best solution is the bring the machines to a service center to get the machine replaced. The only problem is that these units are production machines and we really can't afford to have to take them off production more then a day, especially when we have quite a lot of big project ongoing. Should I take a gamble and give it a shot or should I just buy a SATA II SSD instead?