I am not a frequenter of hole-in-the-wall Chinese restaurants, so I have not much a basis of comparison, but Szechuan Express is pretty good. I usually go with the Teriyaki chicken, which comes with a Teriyaki sauce that is very tasty and different from a Teriyaki Bowl type of place. My wife prefers the Thai Curry Chicken.
We usually do take-out, though they will deliver. The store does smell funny (read that in another review), but the people are really nice.
Word of caution: avoid the Wor wonton soup.