Im new to the game here. Sorry if this thread is in the wrong place. Im interested in getting an external HD to use TimeMachine and store my rather large iTunes library on. Ive never had an external HD before, so Im not real sure what to look for. Can anyone recommend some good drives, 1TB minimum, that work well with the new iMac? Also, Ive heard that I need to pay attention to the format so I can read and write from the drive. What should I be looking for when getting a drive? Any suggestions would be helpful. Thanks.