I am in the market for a new laptop. I am a graphic designer, mostly print-based and the bulk of what I work on is in InDesign, Illustrator and Photoshop. I own an iMac but need a notebook as a secondary computer so I can work away from the office. It will also double as my home computer for editing and storing family photos. I think I've settled on the 13" Macbook Pro with Retina Display but am not sure about technical specs. I think it is worth upgrading to 16gb of RAM as I often have multiple programs open, and much of what I do is image-heavy. I'm not sure what processor to go with though (will I notice a difference between 2.7, 2.9, 3.1GHz??) any advice would be much appreciated! And storage… $600 to upgrade to 1TB. Not sure if it is worth the cost. Any opinion on buying refurbished? Thanks in advance.