I bought a rMBP a few days back and have been gathering all my files on my old Mac for transfer. I always move files over by hand as the Migration Assistant never seems to get things quite right in my experience. In the past, I have always moved the files via an Ethernet cable. But, I forgot that the rMBP doesn't have an Ethernet port, so I need another option. I tried moving the files over my wifi network, but the estimate came back as well over 24 hours. After doing some research, it looks like connecting the Macs via a Thunderbolt cable would be my best option. Now, here are my questions: Is this possible to do and the fastest option? It looks like support for Mac-Mac networks over Thunderbolt was added in Mavericks. But, I just want to make sure. Can I buy a Thunderbolt cable (don't currently have one) and then return it to Apple after I have moved the files? I know this sounds really cheap of me, but I don't have an external display and don't plan to get one anytime soon. I don't really want to have to buy a $30 cable I'm only going to use once. Thanks for your input!