I have purchased but not yet installed Windows 8 on my recently-purchased reburbished rMBP, transitioning to Apple after 25-plus years with Microsoft OS's. I have one academic/research program, NotaBene, that I need to run via Windows and probably not much else. I even moved from Office 2010 for Windows to Office 2011 for Mac. I had initially considered setting up BootCamp and installing Windows 8 there, but I'm unsure about how much space I need to allot to BootCamp. I understand that I need at least 20GB for Windows 8 and then some extra space for programs. Because I really don't want to have unused space in BootCamp (having only 256GB total), I was thinking about ordering VMware Fusion, forgetting BootCamp, and running Windows programs in the OS X environment (I realize I could do that even though Windows 8 is installed in BootCamp, but there is the whole issue of guessing how much precious SSD to allot to BootCamp). So, how much advantage is there to setting up BootCamp anyway, given my usages? If you recommend BootCamp, how much would space would you allot for it? Or would you forget BootCamp and just run Windows programs virtually? BTW, I do not play games on my computer. Thanks for your help. I've read lots of threads on this but am having trouble nailing down the best way to proceed.