I have 3 2010 5,1 One of them is a dual socket. One machine is just spare (really sitting, as a backup if something fails). I see there is a 2012 for sale local to me for $200. Should I jump on that? Do you think Apple will kill off 2010-12 OS support at the same time or let 2010 die off first? I'm not looking to run any hacks to extend the life support.