I ate Pho for the first time at lunch today with a Vietnamese lunch partner at Pho VI Hoa just south of Palo Alto on El Camino. I thought it was great and she said it was about as good as you're going to find without really looking hard or knowing someone special. It's a large place that was full of people and noise, enough noise to create opportunities for jokes as you tried to talk to each other. So it's well known in that area and now the rest of you know.
Pho Vi Hoa
4546 El Camino Real