Warrior: Mainly aesthetics. I'm actually a sword-and-board kinda tank, but unfortunately they gave that setup to paladins - which I'm not a big fan of - and gave the big axes to warriors, which strike me as more of a melee DPS weapon, not a tank weapon (same with greatswords for dark knights, which I like more than paladins but not as much as warriors). So it basically came down to which tank class I could live vicariously through for 60 levels, and warriors are definitely it.