Which one is do you like, miso soup or udon soup?
Miso soup is a real soup while Udon soup is the broth for udon noodles. Udon dashi is soy sauce with stock taken from either konbu or katsuo or both. Therefore, I would say miso soup since you can add tofu, wakame, egg, and other items in miso soup to make it more versatile. When you add pork, viola! It becomes Tonjiru!