I hope this isn't a FAQ (I searched...) but I'm asking about how easy it is to repair the HD (fusion or otherwise) on the 27" 2012 iMac. I was hesitant to buy the new aerodynamic (hits floor faster?) iMac first because of heat - which, from posts here, sounds like are not an issue (true? for extended CPU-heavy tasks?). OK, so if that works - Hard drives all fail, just a matter of time. Assume I do backups (I do). When my fusion or other non-pure-SSD drive fails in my 27" 2012, how fixable is it? I've heard the screen has to come off, but then I heard that wasn't a huge deal after all (chisel in front, or metal-cutting circular saw in back, not req'd). So I still have my dual-2.3 PMG5, so I keep hardware long after Applecare is gone. Excluding warranty, will the 27" be fixable down the road? Potential buyer would like to know. Thanks!