Vietnam is the worst country I've ever visited in my life.
If I were to move to an Asian country, Saigon (ho chi Minh) would be one of my top 3 or 4 choices, especially since its cheap.. Along with Bangkok/pattaya. Maybe Laos (Vientiane, where my 1st daughter and 1st baby momma live).
Shanghai and Japan (Tokyo or Osaka or Kyoto) are much more expensive. I'd have to win the lottery or be taking in a couple hundred K a yr.... Same with Singapore.