Hi, due to working reason, I need to install a Win7. It seems people saying the Bootcamp Win7 will make the MBP very heat. How is the virtual machine performance? what's the cons? I will need to do little bit coding (not often) with visual studio. Non retina MBP - 16G memory, 256G 830 SSD. Questions: 1. Which will be heater ? Bootcamp or Parallels/VMWare? 2. What is the performance gap between virtual machine with bootcamp? 3. What's the battery life difference? What will be your recommendation?