Mine is just lvl 45 with 36AA and so far I just feel that beeing a T1 DPS like an assassin would benefit more to a group. My buff are average at best. + X DPS is not something I,d call "ubber" in a 6man group where you might have 1 or 2 melle beside your tank.
So I'm wondering what is the buff/abilitie that make you feel like your group just need you to be succesfull ? Or the group off abilities ?