What Death Knight is the best and looks the coolest?

I am (finally) nearing the lvl 55 mark, and am TOTALLY ready to make some death knight GREATNESS! i have decided to go with tauren ( because they look freaking sweet with the death knight armor) and because of their stamina boost and extra health. I am speccing in the unholy talent tree, so tauren the death knight for me? and please tell me your opinions on the kewlest death knights (in the armor give to you throughout the first quest arc).