Warrior Tier 3: Dreadnaught
In this authors opinion, the Dreadnaught set is easily the best looking Warrior set ever made. This says not only a lot about the set itself as the number 8 overall in all of Azeroth, but it also speaks volumes for the Warrior class being neglected in many other sets. That said, the Dreadnaught set is simply amazing looking with the gunmetal gray color scheme and huge menacing shoulders with an eerie glow.
Couple this with the evil looking helm and I am certain that there are many Warriors who would still be wearing or otherwise seeking out this set if Blizzard implements an appearance tab.