We LOVE Changsan. We've been going there regularly since 2004. The food is authentic, the staff are wonderful and it is consistently yummy. It is hard to find good Thai food in LA, but Changsan is a gem. I tend to judge good thai food by the soups and their Tom Yum and Tom Kha soups are authentic, fresh and delicious.They are also kind enough to make a lovely ""chicken in light sauce, for little girl"" for my daughter, who is not into spicy food. All her friends love it too. I also recommend the Yum woon sen, the green curry and any thing they make with mint and chilli or basil and chilli. Even the old standbys like Pad Thai are good. It is also very inexpensive.
Pros: Great food, nice people