Hi all, I know there have been tonnes of posts regarding performance of the retina macbook. I'm hoping somebody can help me decide. I have (well actually HAD until this weekend when a storm hit and killed my imac, but its being covered under insurance) a desktop that i do intensive work on, as well as a MBA. I have a late 2010 Macbook 11" 1.6 core2 duo with 4 megs of ram that has not skipped a beat until recently in terms of being able to handle tethered shoots with aperture/lightroom and 1-3 layer retouching in photoshop. I do fashion photography so all i'm really concerned about is single single layer textures/spot adjusts and levels for initial markups before going to a retoucher, or if its a simple shoot then being able to work on a raw file (<50mb) on a commute. Sometimes i will combine plates with a shot but its usually 3-4 layers or less. The MBA has been fine until a few months ago where it has started to lag a bit in terms of file size with me working on larger res raw images, as well as the the latest CC 2015 version of photoshop. I'm ASSUMING that if my 5 year old mba could handle most of this then a 2015 rMB would be able to handle it without ANY hitch, but I need to be sure. In Australia for the same price I can get the 13 rMPB for the same price but i've become used to a small portable machine and would prefer not having to lug the extra weight around, especially when on location where I have a carload of gear anyway. The one port is fine with me provided I have a USB type A dongle, honestly the only port i've ever really needed is usb and rarely mini display/thunderbolt for an external display. I'm almost sold on a space grey 1.1ghz rMB but was just hoping to hear from others that do retouching to give me an idea of how it's working for them... Cheers!