Yeah I have friends who build such smiters too. I was inspired by that in my other thread. Anyway, such smiters are simply concentrated melee killers, but they do extremely well against barbs. I still say doom flashes are a good way for the barb. A fool's axe with 40ias + cruel would work, but those with 2os are mythical. A perfect display is needed, and may not be enough. Just grab the hdin or bone necro.