While there are many decent Asian restaurants in southern NH, the Lakes Region has relatively few.
I live in Tilton and headed over to what used to be a fair Chinese place that we got take-out from. As soon as I drove up, I could see that it was a new place.
Su-Khothai Asian Gourmet
The people who own the place are really polite and helpful and excited to bring Thai food to the area. I had Tom Yum soup, a spicy Penang curry with duck and of course Pad Thai. I ordered the soup really hot and it was fiery. So good.
Not to be so enthusiastic as to shill too much but this is really worth checking out if you're in the area of Exit 20. The restaurant is in a small plaza behind the Evans Expressmart.