Budget
Tong Heng
Chinese bakery famed for its freshly-baked egg tarts $1, best washed down with a bottle of water chestnut juice. Tong Heng now has many other outlets, including one at Changi Airport, but this is the original.
Two good hunting grounds for cheap eats are Smith Street, a single row of fancy stalls with the nicest ambiance of the lot and quite decent food too, and Maxwell Centre at 2 Murray St, just across road and a few minutes walk from Tanjong Pagar MRT. Most dishes in either location are less than $5, although seafood can get considerably more expensive. Note that most of Smith Street's stalls are open for dinner only, while Maxwell Centre is open 24 hours. Connoisseurs may also wish to check out the 2nd floor of the newly renovated Chinatown Complex, which hosts one of Singapore's largest hawker centres with over 200 stalls, but this labyrinthine warren of concrete and flourescent lighting is both hard to navigate and not exactly a treat to the eyes.
Tian Tian Hainanese Chicken Rice
Described by the New York Times as a "chicken rice shrine", this humble stall is considered by many as the best in Singapore and is easily distinguished from its many imitators by the long queue snaking in front. The chicken is meltingly smooth, and don't forget to try their trademark chili sauce.
Midrange
Hometown Restaurant
Serves up authentic Sichuanese Szechwan food, meaning fearsome quantities of dried chili, tingly Sichuan pepper, salt and oil. The tea-smoked duck $10 and mapo doufu $6 are both excellent, while bowls of dan dan noodles go for just $5. Open for lunch and dinner daily.
Fatty Ox Hong Kong Roast Duck
Aside from the obvious roast duck half/whole $16/32, or dishes with duck $8-10, this restaurant is also known for its claypot dishes and its daily-changing Chinese soups. The $5 lunches are good value, but even at dinner $20 for two is plenty. [Fatty Ox moved when Murray Terrace was renovated, and has subsequently closed down. Unsure if they have set up in a third location.]
Tian Jin Fong Kee
Originally a dumpling shop from northern China, this low-key eatery at the corner of the massive People's Park hawker center has mutated, in a very Singaporean way, into the favorite hangout of sailors and their Filipina/Thai girlfriends from the nearby KTV lounges, drinking San Miguel until early morning and ordering off their extensive second menu of Filipino food. Chinese eats are cheap $5-10, Filipino dishes far more expensive $25+, but they're huge and meant to be shared. Fun people-watching.
Tiong Shian Porridge Centre
Always-packed eatery in the heart of Chinatown, specializing in rice porridge and claypots, with a sideline in seafood dishes. Try their famous frog claypot from $8, but the squeamish may want to avoid the hoon chang — large intestine — dishes. Note your table number, then order and pay at cashier; there's more seating on the 2nd floor if the street level is full.
Top end
The Universal
A quaint fine dining restaurant with a modern take on European cuisine. Attached wine bar.
Blue Ginger
Possibly Singapore's best-known and most expensive restaurant for very authentic Peranakan food. One of the most popular dishes is ayam buah keluak, a chicken curry dish made with candlenuts.
Uluru
This is an Aussie Steakhouse with charm aplenty. Good prices for a hearty meal. Look out for the cow uniforms on the staff.
In Chinatown there is, needless to say, plenty of Chinese food to go around! But if you hanker for something different, Tanjong Pagar is also Singapore's unofficial Korean district and there are a large number of very good Korean restaurants too, plus a sprinkling of European fine dining establishments around Club St and Duxton Hill.