Ok - so I'm getting pretty close to walking into best buy and get a 21.5" 2011 iMac. From what I've read - skip the Best Buy plan (I always do anyway), but get the AppleCare Protection Plan. From what I've read, it lasts 3 years and has pretty good protection when something happens. Does it basically mean if say in 2 years my iMac HDD fails, they'd fix it for free? How exactly does it work? Also - can I buy it online AFTER I've made my purchase, or will Best Buy offer it while I'm buying it? I'd prefer to just order it online after I've gotten it home and set up. Which brings me to another question - how long does the basic warranty last? Should I get the Protection Plan right away, or wait until the default basic one wears off, since I'll get that extra time?' Oh yeah - and can you extend the plan after the 3 years are up, or are you then all by yourself?