Hello All, I am an avid PC user and will soon be switching to a Macbook Pro Retina for design school in the fall and wanted to get some input. My main area of focus will be UI/UX Design using programs such as Sketch, Photoshop, Fireworks, Illustrator and the like. I plan to purchase either refurbished or slightly used from Apple direct or Amazon. I am zeroing in on the 15.4" models with Retina (2012-2015) and wanted to ask a few questions as well as get some feedback. 1.Is there any year range I should lean towards or steer away from? I would like to get as new as possible, and to have it fall within the range of still adding AppleCare would be a bonus. However, I am open to going as far back as the original Retina years as I am pretty conscious of my devices and take great care of them. 2.Is the 15.4" a better buy overall or simply for the fact of a larger screen? 3.I am looking at models with 16gb of memory in the 15", but is 8gb sufficient enough? 4.How about the graphic card options? Will I see a dramatic benefit from the dedicated graphics in the 15" models over the Iris Pro options?? (GT 650M/GT750M) I have worked on Mac towers before in previous design courses but have always had a custom built PC or Windows based laptop while at home. These graduate level courses are requiring a Macbook Pro with Retina display and since this will be my first Macbook Pro purchase, I just want to be sure before spending that amount of cash. Any feedback, input or recommendations would be greatly appreciated Thank you!