Its less crowded here as compared to their competitor with a similar name that us located up north-east to where Authentic Mun Chee Kee is.
Having tried both, I would say both are excellent soups, so just eat both, whichever convenient, don't have to be loyal just for the sake of it.
Soup was tasty and the pork organs were fresh and was cooked just right, not hard whosoever.
Authentic MCK offers braised pork rice for $2.80, which is quite good actually.
Great place for a meal on a cold rainy day.