I'm a fan of Kenzo, and this is definitely the place to go if you love ramen! I love the broth and noodles they have here - it is actually flavorful (not just MSG and salt in water), have good portions for a reasonable price ($10-15 for their specialty ramens), and definitely nice place to sit at this location.
I would recommend getting their Tonkatsu (pork bone based broth) ramen. I tried the Tonkatsu sho-yu ramen which was $12 to fill me up and not spicy. Most people prefer the spicy ramen but I actually prefer this one as the broth is warm and tasty and sits well in my stomach after. It has decent proportions of toppings to ramen (half an egg, chasu, sliced green onion, and bean sprouts - which I opted out of), and for $2 you could add extra meat (which I got 'cause I was hungry and got double the meat slices, so it was worth it).
I would say avoid the miso and sho-yu ramen for $7 because their portions seem smaller and it's more generic... you might as well go for a more specialty ramen if you're in a ramen shop like this!