Hello everyone, I have a 2011 15'' Macbook Pro, 2.2GHz QuadCore i7 CPU, 8GB RAM and 256GB SSD. I bought this last July and it cost me about $2500 then. I am a heavy user of Safari, iTunes, Photoshop, Lightroom and some other photo processing software. Is it worth an upgrade to the new 2012 Pro with Retina? I want to understand the benefits from both the processing power as well as how the display is going to help me with photo editing. Also, if you do recommend the 2012 model, is it worth spending the additional $250 to go from 2.6 to 2.7GHz? Your feedback is really appreciated. Thanks!