I have a 2009 MBP, and have just bought a 2011 MBP. A few months ago, I installed a 7200 RPM HD on the 2009 MBP. My new one has the base 5400 HD. I have migrated all the data from the 2009 to the 2011, and have been using the 2011 MBP for a couple of weeks. I would like to be able to transfer all the data, and the machine-specific info, from the 2011 HD to the faster HD currently in the 2009 MBP, and then transfer the data and machine-specific info currently on the faster HD currently in the 2009 MBP to the new, slower HD in the 2011 MBP. I will then physically transfer the HDs from each machine to the other. I understand I will probably be best cloning, since each HD needs that specific information to run on its respective computer. I have a fast OWC external HD, which runs on FW 800. I have a fast Synology NAS with plenty of space, which runs on ethernet (on my network). I have SuperDuper. Advice on how best to achieve this? Thanks in advance!