Best class to duo with a ranger?

[Cords]

I think another class to bring into this discussion is bards. Even from low levels you start to gain good group buffs. By level 6 you already have Selo's run song, and Hymn heal song. You can fear kite, backwards kite or swarm kite. Bards also get slow, snare, mez, fear, invisibility, healing, mana regen, dots dots and more dots, and target based damage.

That all said, Shaman would be the first choice, because with Torpor and Cannibalize IV the shaman can't be beat. Plus real heals, buffs galore, dots, slow, and debuffs.