good/cheap Vietnamese
Not sure exactly what you are looking for re: good/cheap but I often go to:
VT Nam Nueang
84/3 Bearing 29, Sukhumvit Soi 107, 02-399-5292, Open daily 10.30am-9pm.
Another branch of a famous Vietnamese cuisine chain from Udonthani, well known for their namnueng (sausage with greens and herbs), with its delicious dipping sauce, and fondue talay. You can get four pieces of namnueng for B100 and mhee moo (fried pork) for B90. They also do cheap steaks and pasta if Vietnamese isn’t your thing. Be warned though don’t go hungry as this place only has 30 tables and is always packed which can mean waits of up to half an hour.
http://www.thaivisa.com/forum/topic/...etnamese-food/
http://www.bangkokpost.com/lifestyle...namese/search/
As with many Thai restaurants, it's probably better to go with a group of people, and order/eat family style. You can also buy VT NM boxes at a counter in Siam Paragon and eat at home. If VT Nam Neuang is packed head across the street (Bearing, aka Sukhumvit Soi 107) to Tum Tum, amazingly fresh, healthy, flavorful Thai food - they have branches in Siam Sq., Mega Bang Na, Seacon and other places, but this original restaurant is best.
http://www.thaivisa.com/forum/index....0sum%20bangkok
There may be some Dim Sum recommendations in the other thread?