The black ones look more authentic-original --- if that makes sense. Those wavy lines on the side of the blue and white ones look strange on an adidas shoe.
i am absolutely certain i saw the black world cup ones in my local adidas outlet a few weeks ago as they had a huge supply of various world cup related merchandise already available at the outlet from official kits to shoes
..... and they were around CAN$65 or something, i'll have to go back and check