I went back here for the third time last week and I have to say I'm a huge fan of this place. The no reservations/won't take your cell phone number policy is the only real downside as there is frequently a long line especially if you are coming with a group.
In terms of appetizers the tofu nugget and kimchi are both excellent, as are the gyoza. The fried chicken was a touch sweet for my liking but was good nonetheless.
Re: the ramen, I have tried the Shio, Shoyu and the spicy garlic and while all were great I found the heat and garlic flavour (note the garlic is a grated raw clump that you put into the soup yourself) of the latter soup overpowered the other flavours, which is a shame because the broths of all of the ramen are unbelievably delicious.
The the eggs in the Shio and Shoyu were perfectly cooked and had rich oozy centres.
Also important to note is that when you order the ramen you will get asked whether you want it light, medium or rich (ie. how fatty you want the broth to be) and whether you want pork shoulder or pork belly (only applies to the ramen that have meat in them). In my opinion the winning combo is the medium broth and pork shoulder (vs. the belly); while I know most people's instinct is to go for the fattier cut (ie. the belly) in this case I would argue the very intense flavour of the shoulder is the better call especially given the broth is already plenty rich.
Check this place out, I highly recommend it.
-Brian
PS - draft Sapporo for under $6. Win!