Our 2011 imac (running 10.6.8) went back for a display change. They dropped it and broke it, so have offered us a brand new one.
I backed up with Time Machine to an external drive before sending it back. I read that with Migration Assistant it should restore to a new one OK. My experience with Migration Assistant previously (going from 10.4 to 10.6) wasn't good.
Any tips to ease the pain ?