Whenever I want to make a sweet and sour dish, I usually make my own sauce rather than using anything out of a bottle or jar. Here is a quick recipe that works really well:
DIY Sweet and Sour Sauce
Mix 3 tablespoons ketchup, 1-1/2 tablespoons orange marmalade, 2 teaspoon soy sauce, 2 teaspoons balsamic vinegar, plus grated ginger and cayenne pepper to taste. Use in place of the usual sweet and sour sauce. Works great brushed over bone-in browned chicken pieces before baking. Serves 4.