My Mac just went belly up - a software corruption in my encrypted partition has rendered Mac OSX unusable. I took it to Apple, they spent over an hour throwing every piece of software they had at it. Their own diagnostic tools were freezing up from this issue. The tests that did run indicated no problem with the physical hardware, and indeed Windows runs flawlessly.
So their totally shit software destroyed itself and they don't have the tools to fix it. Now they're recommending forensic recovery and of course they won't pay the $500-1000 for that.
I think I'll be sticking with Windows from now on.