I'm not a ramen expert - never been to Japan either. But if you love pork, salty flavors, and noodles, get in line here. It's worth the wait. My favorite is the Shoyu Ramen with rich broth and pork belly. The belly is like a 2cm thick cut of bacon, and the fat is delicious. I've come back 43 times and they never disappoint.
I've been to Santosei, Santouku, and Kenzo, and Kinton is definitely my favorite by a long shot.