I have been to this place at least 50 times over the course of my life. My parents used to take us here (4 kids) and get the hunan dinner for four.
The reason why this restaurant keeps us coming back and has me referring all of my friends is because you get a big bang for your buck. That, and the food is outstanding.
Try the sesame beef and the emperors chicken. It is seriously to die for.
I am in North Phoenix now so I spend a little extra drive time, but it is worth the drive.
I love that it hasn't changed and it doesn't need to. It is my favorite little hole-in-the-wall! BTW, I was just reading reviews on Yelp to see about trying a new fun restaurant for Valentines day. I typed in Big Heng just to see what people think about it. LOL
If you don't like Big Heng, then I don't like you :D