Is the Vietnamese as good as its popularity?


I recently have intentions to travel to Vietnam. I have heard from many travel blogs said that Vietnamese food is much better than its peers in South East Asia.
So the question is Does Vietnamese food is good ? Anyone has some suggestions to try ? Maybe the list of Vietnamese street food in this website is ok ?

After completing my food trip with Red gecko travel tour operator, i think vietnamese food is one of the best in the countries i have visited so far. This place is so memorable with sceneric landscape especially in Sapa