Wang's Express is a good place to go when you are in a hurry. I havent found much in the way of good chinese food in Phoenix, but Wang's is probably the best. The service is super friendly and they always willing to make sure my lo mein has a little amount of cabbage and onion in it upon request.
The place itself isn't much to look at and the bathroom as been known to smell like burnt brown sauce. I rarely eat-in though, I usually take-out. The prices aren't bad and they do have some pretty good lunch and dinner specials.
My boyfriend isn't a fan of their friend rice so he usually orders orange chicken and I tend to toss up between mandarin hot chicken (aka general tso's) and hour lo mein. Unlike most chinese eateries their lo mein is full of yummy noodles and plenty of meat! I also like their wonton soup, it is a bit bland but it does the trick.