Ilvl on wep = matters the most. Personally I dislike the mace for any race because it takes up too many potential stats but not a big deal... Polearm is by far the best imo and then it's a toss up between the sword and axe, depends on how much haste you have but I'd say that the garrosh axe is better at really high level because you get capped of with haste quite fast really. Note "capped off" means 17k rating, not in fact a cap but a mark where it drops in value.