If you live in Pittsburgh, you may understand how contentious the issue of "favorite local Thai restaurants" is.
So, I'll begin this review w/ my personal bias: Thai Cuisine is our go-to Thai restaurant in Pittsburgh. This is in part due to proximity, but the relationship is on no small part sustained through friendly staff and consistent dining experiences.
Thai Cuisine is -- as my wife and I like to put it -- a rainy-Sunday-evening type place. Their curry broths are great, the apps are tasty, but not too filling, and the ambiance -- particularly after their recent renovations -- is warm and inviting.
I'll admit, that if your'e in it purely from a culinary angle, there may be better options, but for the buck, you won't find many that beat Thai Cuisine.