Hi, I am new to this forum and have a question about the 15" rMBP I would like to buy to replace our current laptop. Besides the usual email, browsing and wordprocessing, I am going to use it for photo editing in Capture One Pro (8.3). However I am not a professional but just an enthousiast. Do I need the rMBP with the AMD R9 M370X dGPU or will I be fine with the Intel Iris Pro in the base model? Thanks.