One of my absolute favorite places to eat in CU. I've been eating there pretty much as long as it's been open and there are very few Thai places that can compare. The staff is always incredibly friendly. The owner and all her family are really friendly and always make you feel welcome. You might want to show up a little early for lunch as it can get very busy at that time.
One thing you'll notice right away as you're eating are the quality ingredients which to me justifies the price of the dishes here. My favorite dish there is the Thom Kha Gai. At this point it is like comfort food for me. Whenever I'm having a down day or if I feel like I'm coming down with a cold I'll go in and order it. It has a lot of different levels of flavor that you just don't get anywhere else in town. There's just a lot more ingredients in the dish then most places and they blend perfectly. I never, ever leave anything other than an empty bowl. I usually get it about mild to medium spicy. The thing to remember when ordering here is that their spiciness levels can vary and almost always swing towards HOTTER than you might expect. So always get mild if you have any fear of getting too hot of a dish.
I have yet to be disappointed by their curry, but my favorite is probably the Massaman curry. I'd also recommend their spring rolls and their pot stickers for an appetizer. Although I've never tried it, one of my friend's can't stop getting their Duck so that might be worth a try as well. I might steer clear of the Pad Thai here. Strangely it's the only thing I've never been 100% happy with, but frankly you can get a decent Pad Thai just about anywhere so it's more fun to branch out and try something new.