Hi guys, I'm currently thinking about going from a 2012 15" rMBP (base model) to a 2015 15" rMBP (base model) as I can get 20% a new 2015, which saves me $500, which is pretty damn good. I have had the 2012 rMBP since 26th December 2012, replacing a non-unibody 2008 MBP, and been holding off upgrading for about 6 months as a "possibly" NEW '2016 Macbook Pro' with a new redesign is (probably) only months away from being released. If i were to get the 2015 model, would it be considered a significant upgrade? I use Photoshop a lot, InDesign and Illustrator sometimes and do run Windows 7 and play some games through Steam (not overly graphic intense, and I mostly connect the MBP via HDMI to play games with a xbox controller). This is my first post on the forums, so thanks in advance for any responses!