I'm about to get a new MacBook Pro for work, and it's going to be either the 13" with 512GB SSD / 16GB RAM or the 15" with 512GB SSD / 16GB RAM. I haven't decided that yet since it depends on how often I will have to fly to Europe. One question I do ask myself though is how bad the fan on the 15" model is, especially compared to the 13" MacBook Pro Retina. I've had the first 13" MBPr model (2012) and was highly satisfied with it - the fan pretty much never kicked in. Since I'm incredibly sensitive to noise even the slightest fan noise drives me crazy, thus the question: how's the fan on the 15" MBPr with AMD GPU? And how's the one without the AMD GPU, is there any difference? I know for sure I won't need a dedicated GPU so I'm tempted to go with the base model with Intel IGP and a larger SSD since I will need both RAM and storage space for virtualization.