I have been reading this site for years, but never came on here. I travel often for extended periods all over the world and use my 11" maxed out 2010 Mac Air currently for sorting/cataloging images, but not optimizing them as yet. I bought the 11" because when on airplanes if the person in front reclines their seat then a 13" (I own the first 13" Air) is moved into your chest and is very difficult to use, but I find the 11" is easier to use in those situations. Nevertheless, I am wanting to start using Photoshop on my photo travels on a larger 13" screen and I do not want to carry much more weight than my current Air, but need more power. I must say I am totally disappointed with the new 13" MBP since I was waiting for it to come out with specs similar to the 15" Pro, i.e., with quad-core & 16GB of RAM which I want as on my home 32GB Mac Pro files often take a long time to process/open/etc.while usingPhotoshop. I see the weight of the retina 15" is about the same weight of the 13" regular which is upgradable to 16GB RAM MBP. So it appears the retina display is MUCH lighter. Anyone heard that 16GB on the new 13" MBP is eminent? Any other comments on the above which might help me make a decision within the next 3-4 months? Thanks for reading this to the end.