I'm starting to like this Jordana girl (you ARE a girl, right?). Welcome aboard, have you met the droolers, yet? If not, you will. Trust me.
Anyway, I voted for Toht because out of all the villains, to me he represents the spirit of the old cliffhanger villains--dark trench coat, dark hat, creepy voice and laugh, beady eyes, and there is more of an air of mystery about him than with Belloq, who wears his heart on his sleeve.
Toht is just so...sinister.
EDIT: By the way, what about Panama Hat? Why isn't he on there? Or Pat Roach's German Mechanic?