Considering all of them are pretty small, I don't really like any of them. I was really hoping that since most all of Black Ops 2's default maps are small in size already that they would change it up and add some larger maps finally. I'm a Search and Destory kind of guy and call me old school, but I prefer to play Search games where everyone slowly hangs back, scouts out the area, and sticks together to survive. Not suicide rushing and trying to get as many kills as you can before you die in the first thirty seconds. With tiny maps like Grind, it only encourages that play style and each round lasts about a minute and that's just not fun to me.
Here's to hoping that the next map pack has larger maps.