I've been to Thailand twice. Out of the many thai restuarants I've been to in LA, Thai Pepper is by far my favorite. You can spend less than $15 there and get a beer, an entree, rice, and tea. Yes, that cheap. I recommend the tom yum sum, noodles with egg, veg. coconut soup, and the orange chicken.
Since there is only one cook, orders can take awhile. Still, grab a $2 Singha beer and relax... cause you have great food coming your way.
Pros: Super cheap, Consistantly awesome food,
Cons: Orders can take awhile to come out.