I grew up eating authentic Thai food, as we have a family friend from Thailand. So needless to say, I'm pretty discriminating when it comes to Thai food. Sawasdee is the best place in the Triangle for Thai (that I've tried). I'd surprisingly never had Drunken Noodles before, but I can tell you when I get them at other places, they definitely don't compare. I don't find the price for Thai to be expensive here, in fact its one of the cheapest Thai restaurants I've been to in Raleigh. The decor is bright and inviting, although the place is small. I find it to be a romantic place, but I can see where others wouldn't. Their spice levels seem to be higher here than at other Thai places, so make sure you talk to your server about the heat levels if you don't like it spicy (they'll change it for you).
Pros: Interesting decor, excellent food, noninvasive service
Cons: Its hard to spot from the road on your first time