So I'm moving from a late 2007 Imac to a new 5k Imac...should I use Time Machine on the new 5k to simply restore all my stuff....or should I begin fresh and new. Some points first. All the important stuff...Pics/Music/Movies I have backed up externally in Time Machine AND just copied to a separate external (2 backups is my rule though I often do 3). I don't buy a lot of software so I can't think of any programs I need that I can't re-download directly. With that said, I've always thought going from a NEW clean install of the OS is the way to go and was not planning on using Time Machine. Any pros vs. cons thoughts would be appreciated. Thanks in advance!