Stumbled upon this place a couple years ago - it's my favorite Sulluntang joint in LA. Nice rich broth and they serve rice heated in a stone pot resulting in a crisp bottom. Granted I've only tried a few Sullungtang places including Han Bat in Ktown.
Another bonus is the excellent Kimchi http://milkimchi.com/
Jang Mo Gip
9816 Garden Grove Blvd
Garden Grove, CA 92844