I think the greatness of OSXs past UIs is a bit over hyped. I changed from Windows 7 to Mavericks a couple of years ago and still find 7 more intuitive. You can see at a glance which programs are running from the bar in 7 unlike OSX, I still have not figured out the Finder very well and so on. On the other hand OSX seems better engineered in many ways, more stable, faster to respond and so on.