I'm upgrading to a better spec iMac and want to transfer all apps, files, settings, etc. What is the recommended method - I have a time machine backup and a SuperDuper clone of my old iMac. From the research it seems I have many options: - Migration Assistant from old iMac (using Thunderbolt and Target Mode) - Migration Assistant from Time Machine disk - Start in R mode and restore from Time Machine disk - Use Target Mode start up and then Migration assistant (using Thunderbolt connection) - Clone to the new iMac using SuperDuper. Should I do a clean install of Sierra on the new iMac (its second hand with the old owners stuff on it). Both are late 2012, Mine has Sierra, his has Yosemite). Any advice appreciates to resolve my confusion as to the best method to a ensure smooth transition.