I've made a 12/7/1 Ranger/Bard/Barbarian inquisitive and it is really good. I got 32 doubleshot from enhancements (heroic).

But i am wondering what the highest dps build is?

I am leaning towards a pure ranger. +20 doubleshot +20 ranged power and a couple of clickies for extra damage. more doubleshot with killer and 5 fve from feats.

A pure fighter also might be good. +21 doubleshot +40 ranged power and no sniper shot. +14 damage.

I am reading about a ranger rouge artificer split is also good.