This doesnt take portion size at all into account and purely goes by overall taste, but the best pho i've had is
Huong Lan in Honolulu, HI.
The other place in Hawaii which is supposed to have good pho is
To Chau, but there is always a line there and my relatives who went said the line was basically because it was cheaper and not necessarily a difference in taste. I'l never know b/c I could never handle the line.
My In-laws are Vietnamese and I am not so I trust their taste buds when they tell me one is better than the other, but my taste buds do tell me that Huong Lan is better than any other bowl of pho i've had in the US so far.
I've only had fast food pho in Saigon at
pho 24, but I wasnt overly impressed with it being any better than what we have in the States. I'm told that the real place to get some pho is further in the north where people look at you funny if you dont add in the plate full of fresh veggie garnishings.
As a basis of comparison, I've had Pho in the 7corners area of Eden Center in NoVA, South Philly, Oakland, and (as previously mentioned) honolulu and Saigon.
I'm curious to see these other places that people recommend.