Choose Girls of Any Nationality

Hypothetical: In a fictional universe, you find yourself wandering through a large building. Each room in the building contains a group of 5 girls from a particular country. All of the girls in each room are tailor made to fit your specifications for "hotness." You can choose 3 different nationality groups and have sex with them over the coming days (American excluded).
Which nationalities do you choose?

I go Mexico, Japan, and Germany.