I haven't had time to play them all but i like breakneck and ridge line the best. maybe breakneck a tad more just because i spent nearly all my Halo 2 time in that map.
Another great post!
Ideas for the future:
Nades: when, were, when to not throw one, etc.
Only teabag when safe: don't teabag in the middle of a firefight
Vehicles: tips for attacking, defending, not running over team-mates, etc.
I've seen a few posts where people have posted wrong information about the Halo canon (Story). So if anyone isn't sure on a fact, or too lazy to look it up yourself, post them here, and others can verify the fact before it is posted.
On the campaign mission, The Package, at the start when you and Emile overlook a group of covenant, sprint off and assassinate the elite standing guard.
Hope this helps!