> I consider the ability to plug in DisplayPort monitors [...] a must-have

Out of curiousity, is there any advantage of DP compared to HDMI? I've never had anything that would use it, and HDMI makes more sense as a standard-to-upgrade-to, coming from DVI monitors. Quick googling suggests HDMI has twice the data bandwidth as well.

(not that Macs offer much in the way of HDMI ports anyway...)