I've been to JCK a couple times and it never disappoints.
The shrimp wontons are excellent, the beef is extremely tender, the noodles are delicious and the broth is pretty much perfect. However, I wasn't the biggest fan of their fishballs.
The house chilli sauce/oil is excellent, it's the right balance of richness and spice.
The food comes very quickly and it's very cheap as well.
Highly recommended