Don't forget, there's a "third" Koreatown in West Ellicott City (Route 40, west of Route 29).
Funny, I was just there earlier this week (although I had a Pit Beef sandwich at The Canopy - I definitely saw some new Korean faces there).
There was a great article about naeng myun in the LA Times. Where's the best place to get the icy, slushy kind? This sounds like a question for Grover.