I purchased the base 2012 MBP 13" and added 8GB of RAM. It is supposed to arrive on Tuesday, but I am having second thoughts about whether I made the right choice between it and a 13" MBA with 8GB of RAM. Same Price. My reasons for the choice was upgradeability, CPU performance edge, for processor intensive apps or games. I had also read that the Ivy Bridge chip in the Air does not have the same amount of power to drive the HD4000 GPU as hard as the chip in the MBP. My question for you guys is this: I have seen so many people advising buyers to go with the MBA after making my decision that it is causing me second thoughts. Should I return the MBP when it arrives for the MBA or go with my gut.