We waited 20 minutes for a table and it's worth it. There are lots of reasons why this place gets so many customers.
I really like how this place specializes in noodles. The standard Chinese restaurant offers a million items on their menu. The result is that when you go to the average Chinese restaurant, some dishes will be good, some will be bad, depending on the cook working that day. This place does noodles (and some appetizers) and they do it really well. They have different broths and you can order different size of noodles (e.g. thick vs thin).
I had the beef noodle and my partner had the lamb noodle. The beef soup is very similar to Pho. The lamb was good too.
Price wise, this place is very reasonable. It's not "cheap" but it's not expensive either. If you just want to stuff yourself, Pho is better value. But for authentic Chinese style noodles, you must come here. I'd be coming every week if I didn't live so far.