A couple nights ago I used bootcamp to install Windows 7. I keep all my files on an external drive because I switch between Mac and Windows often, and it is a great way to access my files all in one place on EITHER Windows or Mac. For example, if I have a Word document in Windows, I can save it to my external drive, re-boot my MBPr into Mac, and access it via Pages! PNY StorEdge Pros/Cons - Faster read/write speeds BUT it slightly sticks out Nifty Mini Drive Pros/Cons- Slower read/write speeds but it does not stick out at all. It is like it is built in and more permanent.