(edited by Marius.8052)
Stacked Group Make-Ups
2 guard, 2 war, and 1 situational is pretty much the speed run comp currently for all dungeons. For some of the easier dungeons you can get rid of a guard for more dps.
Gives you near 100% uptime on all offensive and defensive boons, lets everyone melee which has both natural cleave and is balanced to do more damage compared to range, and the situational can usually be an ele or mesmer for combo fields and added support or a 3rd war or thief for more dps on easier things.
Guard/War/Mesmer and Dungeon Guides:
https://www.youtube.com/user/strife025
https://www.youtube.com/user/strife025