If I had the 24-70 mk2, I would have the Zeiss 50, but I don't so i would probably go for the Canon 50/1.2 as the length of that lens lends itself to AF. 50mm and 85mm I would use for people shots and fast AF is very helpful and the 50/1.2 is fast and accurate and wiiiide.
At 35mm and 21mm the Zeiss wins hands-down for me.