Ghosts is cool for me since I had the Nintendo versions for COD and it is my first HD COD, lol. I like it a lot. And I love how there are women are there now Modern Warfare, haven't played it yet, but I do have MW3 and WAW and those are great too!
lol I wish I payed more attention to story modes in general. I like the the Ghost story mode so far, (haven't beaten it yet) and I guess I'd have to say Mason, (since BO is the only story mode I've completely beaten)