My iMac was purchased a week before Xmas. After reading here on the forum, I did a search to learn about the advantages of purchasing AppleCare. Considering that my 27" iMac cost $2400, and I am retired, I need some kind of coverage. The purchase was made at Best Buy, so I can get their GeekSquad insurance plan. Is AppleCare in any way superior? Less or more expensive? Less or more convenient?