So, I'm in the market for a new computer, and one of my biggest gripes about my current 13" '09 MBP is that VM performance is TERRIBLE. At just 1 VM and no real user processes, the VM I have lags horribly and uses all it's virtual CPU. This is pretty bad, especially when I ideally want to be running 2+ VMs all with intensive processes. So, for you MBPR users out there, how are virtual machines working on your box (especially in multiples)? I'm especially interested in those running freeware like VirtualBox or VMWare Player. Also, does the graphics computation hinder the VMs/OSs on those VMs? By "intensive processes" I'm mainly referring to running web browsers while running text editors with multiple Terminals running multiple processes.