There are many versions of Pad Thai. I hope you enjoy mine. It took me a summer to get this "right," and I still make adjustments all the time. This is fairly spicy...add less sriracha and more tamarind for a sweeter sauce. After you prepare it once, you will find it is simple to adjust the ingredients (and garnish) to your taste.
This is my Favorite Thai recipe. Simple to make yet elegant in presentation. Just be careful with the oil content. It may seem excessive, but too little oil, and the noodles will stick and you'll have a mess in your wok. You can get away with 5 tbs. or so instead of the full 1/2 cup but you will have to work extremely fast to avoid the sticking. This will serve about 4 as a noodle side dish or 2 as a main course.