Overgrown was the best, Crash was a close second, or even tied for best. Bog was only fun if you got the good spawn, but it was unbalanced. S&D or Headquarters were ok on it, but every other game mode was garbage on Bog.
I only really played S&D in MW. That's why Bog and Overgrown were the best.
GT: Chicken8or -Epic Halo 4 moment below!!! http://www.youtube.com/watch?v=HW2_eKmm7o8