EE*2->Intuition*3->SoaB/TaN/HR*X (depends on my situation and equipment at that very moment. Massive CG use, which I like, makes SoaB*3 very much worthwhile).
I don't use IM much and it seems to work just fine, though my recent experiments with shotguns've been changing that a little. Still, it seems TaN and HR save more life overall than IM does, so unless I'm going Badass (for AoMs), I drop it.
Also, I've discovered EE(1)'s a must-have even with shotguns, because I HATE having my RL miss that AV (HOW THE HELL DO YOU MANAGE AVS WITH A SHOTTYMAN?! My last game had 3 consecutive levels with sets of ~3 AVs coupled with ~7 Cacos (and more - HKs, Barons) blast away at me, and that was just dlvl13-15 on HMP. WTF?!).
Traits aside, I stand on the middle horizontal line near~ the stairs on Hell's Arena shooting a CG ---> into the void 'till they all stop moving. If not a CG, then a pistol and more patience. Works every time - and a good strategy for any other open-space dlvl - monsters congregate at the center of the map, the fools :P
That, and dropping ammo for the weapon users.