When I got my 27" iMac in May of 2011, it was a top-of-the-line rig. 2 GB GPU, 1TB HDD, eventually upgraded it to 12 GB of RAM, the works. But she's had a troubled history... First, in early 2013, I had some corruption in the screen. Covered by Apple Care: dodged a $500+ bullet. Then, in late 2014, the GPU died. Mine was one of those models with the serial number that had faulty cards (Radeon HD 6970M), so I took it into a local TD Curran. They replaced the card (somehow still barely covered by warranty) for free, but I found out 6 months later that they'd replaced it with a 1 GB card instead of a 2 GB card... took them about a month to fix that problem properly... And now, most recently, I've noticed my iMac seemingly at random switch to a blue/black/blank screen on the Mac OS side and Windows Bootcamp partition. Given the history here, and the fact that my warranty is now completely expired, I'm worried my workhorse computer is on its last legs... and I don't know what to do! I saw a thread on here about how OWC could breath new life into my machine, but I wonder if it's time to just upgrade? Money is kind of tight for me and I'm honestly considering switching to PC (losing a LOT of faith in Apple's ability to make quality hardware/software these days) but I'd first like to know if the glued-together new iMacs are as user-restrictive as they appear. Any advice on a post-iMac life?