Arms warrior which weapon special

[Norch]

Currently i am using marrowstrike as arms with poleaxe specialization but im wondering if i should use ironsoul with mace specialization what should i do to see a dps increase? here is my armory

The World of Warcraft Armory (http://www.wowarmory.com/character-sheet.xml?r=Eredar&n=Norch)

[Dubzil]

You should look in the DPS Forum, there is an awesome Arms guide there.