Love the soup! They have plenty of choices on the menu, but after visiting this restaurant semi-regularly over the past number of years, I pretty much order the same thing each time: soup and fresh rolls. I've tried a couple of (similar) variations of both, but my favourites are the Pho with rare beef and the shredded pork with shrimp wraps (non-fried). As a meat-atarian, I always order the small soup with extra meat (it comes on the side). Sometimes they bring a small side bowl of broth which helps (pre)cook the extra beef because the meat is usually chilled and putting that extra cold meat in the main soup bowl brings the temperature down quickly.
One other tip that someone else mentioned, the parking in that mall is terrible, so be prepared.