Hi, Just wondering how much better in 'reality', not just bench scores, the performance of the 15 inch MBP (not retina) will be over the 13 inch. I have the base 2012 13 inch MBP right now but rendering HD video seems slow - 3 hours to export a 8 minute 1080p HD .MOV clip. How much faster will a 15 inch MBP with the quad core i7 be for editing tasks like this? Would a MBA also be a faster option for video/photo application use? I know it has a slower processor than the 13MBP but apparently the MBA with its SSD makes it quicker for certain things... Any advice would be a great help. I have to decide today to either exchange/return this 13 MBP or perhaps keep it and just upgrade the RAM. But I feel this processor may be the downfall.