Does anyone here user a Surface for any kind of CAD work? I know someone looking into purchasing a Surface who can't decide. He's leaning toward a MacBook. Basically the Surface does everything he needs. However, he does a lot of CAD engineering designs and is concerned there is no app for that on RT and that the Pro would not be a good choice. My simple thinking is the Pro would be superior given the pen and portability, but then I'm not familiar with the software side.