A 25-year PC-only user, I'm transitioning to Mac when my refurbished rMBP (mid 2012) arrives this afternoon. And with 25 years worth of PC files, I need to install Windows on the rMBP, probably along with VMware Fusion 6. My inclination is to buy a copy of Windows 7, but I was wondering if there is a good reason to order Windows 8, with the updated 8.1 being released soon. Also, is there a "best place" to order a copy of Windows? Any input is appreciated. Thanks.