I am a big big fan of their Spicy Beef Noodle Soup - if it is not a signature dish then it really should be a signature dish! In my opinion, the only place in town that can make their noodle soup so good.
Apart from that, their mantaos are really good and is also my favourite dish. Two keys item I would get every time I come to visit this location. Also note that there is one in the Pacific Mall upstairs but it is not as good as the standalone by First Markham Place.
Lots of different specialties and food options to choose from as well but I would keep to the same dishes every time I come.