I like Kill Confirmed the most in Black Ops 2 due to the change in Call of Duty, when they made it more objective based so I kinda had to adapt a little with my play style and I tried a lot of the main objective game modes and Kill Confirmed suited me the most.
On past COD's TDM would have been my favorite but I just can't get into a good match of TDM on BO2 where the lag compensation doesn't screw me over.