My family and I have been eating at Pei Wei for years. The menu is not traditional Chinese; they have their own unique dishes and preparation, which seems to bother some other reviewers, but we enjoy the food for what it is.
We generally stick with the original menu items from years back, like the Mongolian beef and Spicy shrimp. We have not tried the new smaller dinners and wraps. Over the past year or so, the portion sizes have gotten noticeably smaller, but the quality of the food has remained consistently good. The only exception is the Kung Pao beef. This used to be prepared with a fairly heavy coating of potato starch, giving the beef a stiff consistency I really liked. Lately, however it is mostly just flaccid meat with lots of sauce. I wish they would bring the old recipe back.
We occasionally order take out online. The web site is easy to use, and they never mess up an order. The food is always ready on time.
The restaurant is clean and family friendly, and the staff is efficient and courteous. It continues to be a family favorite. (Please fix the Kung Pao beef...)