Well just picked up the new 5K iMac and loving it! Got the stock model with the 2tb fusion drive which I know is a negative for some people but the machine is booting in a matter of seconds and the response time for loading everything is pretty instant! If any potential buyers want to know anything I'm happy to find it out for them. Oh, and the new magic accessories are great, the keyboard is a massive improvement in my opinion and the trackpad is incredible! Mouse.... Still hate it but its solid!