I was waiting for eating noodle for thirty minutes.
The best menu is Gogi guksu and Bibim guksu!
It is located in Guksu street. I think you don't feel like waiting in a line, you go another guksu restraurant.
Although here is so well known as one of the best restaurant, nothing special. And price is much higher, around 7,000won. Good luck and have a good choice!