Haven't switched over to the Mac camp completely yet. Still have a PC desktop at home but I have somehow ended up with two Mac laptops.
MacBook Air 13" (Mid-2012) Mac OS X 10.9.1 Mavericks and MacBook Pro Retina 15" (Late-2013, 2,3GHz) Mac OS X 10.9.1 Mavericks (courtesy of my new employer)