Question about Migration Assistant: I'm considering getting the 768gb SSD drive for my new iMac. Since Apple dropped the price to $900, and with my EPP discount, the difference between the SSD and a 3tb Fusion Drive is less than $400. But that leaves the serious need for an external drive. No problem, I will use my current 3tb USB 3.0 and maybe eventually upgrade to a thunderbolt drive. Has anyone used Migration Assistant to transfer to another Mac whose main drive is too small? What is the best way to do it? Since my current iMac main drive is near it's capacity of 1tb, how does Migration Assistant handle the transfer to a smaller drive? Will it give me some options as to where to store some of my large data files (iTunes, photos etc), or is that something I'll need to do separate from M.A.?