I think act3 merc's are only good for hammerdins who spend most of their time doing chaos (guess thats sort of a majority)

but if u dont, this is probably best

act2 merc with einsight, efort and eandys who has might aura is pretty bad-ass
he'd prolly do as much or more dmg than u ><
its not good in chaos cuz iron maiden kills him in one hit