US vs. Singapore (or Asia)
In US you will live like a slave. You will be flying small jets most of you're life by the time you get to a major (Boeing or Airbus) you're definitely going to run out of black hair. Pilots in regionals are treated really bad.
Singapore currently has few jobs but in near future it's going to open up big and most importantly Singapore license is as good as JAA/EASA. In Singapore you have a really good chance of getting you're first break directly into a major airline