So I'm almost done leveling a warrior alt with the intention of raiding as a dps. I've managed to get two heirloom polearms from Garrosh on my main. I'm aware that fury generally does higher damage, but I've heard that arms scales better with weapon damage. If this is the case, I'd probably have about a 450 item level with a 561 weapon. Should I go with arms? And if so, around what item level would fury become viable?