I'm looking to install Windows 8.1 on a macbook I just picked up (it doesn't support Windows 7 or I'd go that route.) I plan on doing this using bootcamp (basically dual booting). I don't feel like pirating it, but I would like to cut costs if I can. The system builder copy is much cheaper. I was wondering if anybody had experience with this, has any recommendations, and also opinions on Windows 8.1 vs Windows 8.1 Pro. Mostly this is to run software when OSX can't.