I just came to Hanoi for a week from HCM city. I noticed that as compare to HCM city, Hanoi is much running on a slower pace. In the sense of traffic, people, and the food places too. Seems to me the food in HCM city is much more and with plenty of varieties. Some says that HCM is expensive but my short experience is that is more expensive here in Hanoi. However, there is no lack of foreigners as the Old Quarters have plenty people from over the world. Probably from my observation is if you in Hanoi you would love the many Lakes, and in HCM city you have to love the many great parks there. Anybody can add the similarities and differences of these two largest Vietnam cities.