Lee Lai Jiak at Tiong Bahru Plaza specializes in Taiwanese cuisine and the food is pretty good and cost efficient!
Sakon Thai is a casual Thai place in Tiong Bahru. It is run by Thais, so the food should be good.
It was much better than most of the competition, as they didn't overdo the garlic in that fettucine aglio e olio above, and fortunately they used dried chilis instead of fresh ones to give it that nice smoky aroma.