Well, if you go by t-shirt I think it is clear who the happiest team is

not to mention our Chesapeake bay spirit which was a new for us (not just happiness over our win, but better spirit all around), and our cheering at BAE. But enough about our mascot.
But it's harder to be happy when you don't win. 1100 seemed pretty happy all season, even when they lost. 399 was very happy (those guys most have been cold!), 181 was loud, that's for sure. 126 was happy, 571 was happy.
The best way to have fun is to be happy no matter what the result.