Honestly, it's a culmination of things. Up until this point, a friend of mine have been comparing the top-of-the-line ultrabook offerings to the Mac lineups. I thought the Zenbooks looked really sexy and had the performance and construction that I wanted. The new Zenbook Prime announcement has had me salivating; 1080p IPS displays, new Ivy Bridge processors, etc.
After this announcement, though; the Retina display, awesome graphics, HDMI port (Macbook dongles turned me off for a while), 700MBPS read on the hard drive (I'll have to confirm this -- that just sounds too sexy) -- Even the 0.70 inch thickness (I've never really cared about thickness before, but holy hell that's really thin). There are probably some things I've misinterpreted from these announcements, but so far, this laptop far outweighs what I thought was possible through existing PC laptop vendors.
After this announcement, though; the Retina display, awesome graphics, HDMI port (Macbook dongles turned me off for a while), 700MBPS read on the hard drive (I'll have to confirm this -- that just sounds too sexy) -- Even the 0.70 inch thickness (I've never really cared about thickness before, but holy hell that's really thin). There are probably some things I've misinterpreted from these announcements, but so far, this laptop far outweighs what I thought was possible through existing PC laptop vendors.