This is one of our regular dinner spots - it's usually too busy at lunch to get a table!
They have recently expanded their menu from around 30 dishes to over 80, I kid you not. The menu used to only be displayed by pictures on the wall with codes, but they now have actual menus on the tables (which is better than staring just over other customers heads to decide what to eat)! Dishes are Thai prices 35 - 50 baht and Thai portion size (ie small to westerners) but that just means you can try more stuff!
Most dishes come in either mushroom or fake-meat-style tofu options. Both are delicious.
If you visit at night they also have a sticks stall out the front, serving various sticks grilled with dipping sauce. The brown ones which look vaguely like meatballs are amazing.
Cons: super popular so table waits possible, no bottles water, bring your own!