So I currently have a mid 2012 MacBook Pro. I got it right as I was starting college, and it has been great throughout the past four years as I have been using it mainly for school purposes -- paper writing, photos, etc. Now, I'm graduating in May and needing to upgrade. (Be warned: I know next to nothing about all this, so I will in no way be using technical terms :/) My current laptop has been getting slower and slower lately. It takes a while to turn on, and to save new things... I also have started a small side business that has me using Photoshop (PSE) for picture editing and creating graphics. PSE constantly freezes up after I've used it for awhile and I end up having to reboot the whole system. So I need something that will fix all of this. I'm looking at the 13-in MacBook Pro with Retina. Now I need to know what model I should go with. 128 GB, 265 GB, 512 GB? What is the difference in performance between these and which would be best for my purposes? (graphic design, photo editing, some video editing, etc.) Thanks in advance!