I have dined in most of the Thai eateries in Seattle and none compare to Indochine. Portions are probably %35-%50 more substantantial than what you get in Seattle. The quality is also higher at Indochine. Try the garlic green beans with beef, lemon grass chicken entree and mango fried rice. The dumplings are an excellent starter choice.
The atmosphere is very casual though the decor is very nice for a Thai restaurant. It is definitely worth a drive to Federay Way.
Pros: large portions, dumplings, mango fried rice
Cons: In Federal Way