I trade options and am switching to a new broker that uses a Windows-based platform for trading. My hardware setup is a fully loaded 2012 MBA and two thunderbolt displays. I would like to be able to run Windows on one or both screens while keeping OSX up and running. What is my best choice....VMware or Parallels? As far as the trading platform, is there any reason to question whether a MBA would be powerful enough to run it? Is running Windows going to slow down the MBA?