I am hoping to get some advice on a Hard drive to get today.. It would be for my rmbp and my roommates' mac mini. We plan to share it so we were wondering whats the best way to do this? External plugged into one of our machines? usb3.0? TB? or plugged into our router as lan? Putting it on the network or however it works. I am new to "network drives" and was wondering the best way to do this..we aren't looking to spend more than $100.. If it can keep backups of both of our machines, that is a plus too but mostly we both want extra space.. (she is running on 128SSD and I am on 256SSD) Thanks!