Hello everybody! This is my first thread so nice to meet you guys, my name is Davide. I have already ordered the Macbook Pro 15"with 2.7GHz Quad-core Intel Core i7, Radeon Pro 455 2GB, 512GB SSD anf 16 GB Ram. Now I start thinking that maybe I shoulde have ordered the one with 2.6GHz, same Ram and SSD but Radeon Pro 460 4GB. Because probably I'm still in time to cancel my order, what do you think is better? more GPU memory and less CPU Ghz and cache or less GPU memory and more CPU Ghz and cache? I'm a photographer and architect so I will use the laptop mainly with Lightroom, Adobe Suite, Autocad or similar and 3D modelling softwere like SketchUp. Thank you very much guys!