I have been to nearly every Thai restaurant in the area and there is none better in terms of authenticity and flavor. Several years ago, I even went with Pat to Thailand, and he showed my wife and I the restaurants that inspire his cooking. (He might take you, too, if your interested.) I'm telling you, Royal Orchid isn't just close, it is the real thing!
Other Thai restaurants don't even seem to understand what a fresh Thai chili pepper is. Jalapenos? Dried red pepper? The taste is not the same. Royal Orchid mixes highly savory sauces that are light, not syrupy, and the flavors jump out. The peanut sauce starts with peanuts - not peanut butter as some other restaurants.
If you don't like Royal Orchid, you don't like real Thai food.
Pros: Authentic, Friendly, Tasty