I have a brand new Series 3, as well as a new Hitachi 1tb HDD. I want to install the Hitachi as an internal drive. My question is this--other than having to open my computer, is there any difference between making a truncated backup of the original drive with WinMFS and restoring to the new drive versus using Instantcake? Is one way better than the other? I thought that I had read once that upgrading the internal drive made it harder to later add an eSATA drive. Is that true, or an I completely off base?