I absolutely hate the look of Yosemite. As brilliant as he is with hardware, I think Ive has been absolutely horrible for software side. Both iOS7 and Yosemite are plain ugly as far as I'm concerned. It's not 1996 and I have no interest in "flat" design. It didn't work in the monstrosity that is Windows 8 and it won't work for Apple. Anyway... I plan in buying an iMac next month and prefer to have Mavericks or Mountain Lion installed. Is that possible? Thanks!