Hello Everyone, I am about to take a slight change in direction in terms of my career, and moving more towards design based stuff, so I was looking to invest in a powerful 15" MBP. I already own a 13" i7 MBA, which I really love and is never slow. Anyway, I came by this 2011 MBP 15" with the known graphics chip issue. I took it to Apple, and they swapped it out the logic board, and now its fine. As its a Quad Core i7, and I am thinking of increasing the RAM to 16GB, I was thinking, how much different or slower would my 2011 MBP be compared with a 2015 with the same spec's? I am assuming the 2015 would be a lot faster, or would it not be noticeable? I was thinking the 2011 model might actually be better for me in some ways because it still has the ethernet port and CD drive, but thats another thing altogether. Any thoughts on performance differences? Would there be any huge difference? Thanks.