I used to live close by, and I have to say that the quality of other chinese food I have had from other restaurants since moving away pales in comparison to Happy Wok. Happy Wok always has good cuts of meat and their sauces have the right balance. The food is never too greasy nor too dry. Their vegetables are fresh and give the right balance to all the meals.
Maybe since moving to NYC I have frequented too many low-end Chinese restaurants, because none of them are as good as Happy Wok. All I need to do is go visit my father who still lives near Happy Wok and try their food again to reconfirm how good their quality is.
Don't get me wrong, Happy Wok is still Americanized Chinese Fast Food, not authentic chinese food, but it's the best in its category around.