First post from a sometime lurker here - thanks in advance for your expert advice, as there's no Apple store in my country. Earlier this year I switched from a Windows machine to a Retina MacBook Pro (2.0GHz quad-core Intel Core i7 Turbo Boost up to 3.2GHz, 8GB 1600MHz, 256GB PCIe-based flash storage1,Intel Iris Pro Graphics) and it has worked brilliantly. I use it for 200+ page graphics-rich MS Word documents, Adobe Indesign, Photoshop and Illustrator. I currently carry it in and out of the office each day, as I work from home most evenings and weekends. I am thinking of buying a 27" iMac for use in the office and keep the rMPB at home - removing the need to carry it around with me. All my files are stored in the cloud on Dropbox, so I could access them from either machine. My question is - will I notice any difference in performance between the laptop and the desktop machines, given my type of use? Should I spec up the iMac to the i7 processor, or would the standard i5 handle my use equally? I love how quickly the rMBP boots and launches hefty apps such as Photoshop. Is it the processor, or the SSD or the RAM amount that contributes mostly to that? Tl;dr - As a rMBP user, what spec iMac should I buy to avoid disappointment in performance?