Of those listed? Ramen.
Ramen > Udon > Soba > Yakisoba, though all are good.
However, I would put Okinawa soba above all of those (which, yes, I'm qualifying as different than regular soba because it's completely different to soba dishes you have on the mainland).
Kill 1 man: You are a murderer. Kill 10 men: You are a monster.
Kill 100 men: You are a hero. Kill 10,000 men, you are a conqueror!