Best budget Thai food places/areas in Bangkok

What are good areas’s or restaurants to eat Thai food in Bangkok that won’t break the bank?

How long’s a piece of string? My favorite is to go to the Siam Discovery complex (Siam skytrain station, a must visit area). They have a food court on the 4th floor where you pre-purchase a card and order what you want. Really good range of foods. About 80-120 a dish. There’s a few places like that in shopping malls.