Hello, I am a long term Mac user. Currently I use a rMBP 15" 2014. I use both Mac OS and Windows 7 for work. At the same time, I use Galaxy Note PRO 12.2 as my phone and tablet on train. Together with notebooks and other stuff, the total weight is getting heavy. I was hoping that the iPad Pro could run Mac OS but it seems unlike. Am I correct? What is the lightest Mac laptop that can run 3D CAD software such as SolidWorks reasonably well?