I vote Stannis, the one true Mannis of Westeros. He will bring justice to the land - justice and copious grinding of teeth.
Did you know that 4 out of 5 doctors recommend Stannis? And the fifth doctor is a dirty traitor that we won't have to worry about much longer. He fights battles, listens to smugglers, hugs daughters, and doesn't even break a sweat. He's a lean, mean, kingly machine, and he won't stop at just that. He dances at cheap suburban parties for a modest sum, and dines with middle-class families for only a moderate fee. People say he's a god, but he doesn't believe in himself. Every brothel within a hundred miles automatically closes when he approaches, and onion salesmen rain from the skies. His hands are strong enough to crush steel, but delicate enough to kill traitors. He is universal, all-knowing, all-destroying, and hungry. There is no Stannis but Stannis, and Stannis is the messenger of Stannis.
All of this is well known.