AEM MSM site structure pros/cons
Please help me to understand pros/cons between MSM site structure options as below:
Option 1:
/content/mysite/language-masters/en → /content/mysite/us/en
/content/mysite/language-masters/fr → /content/mysite/fr/fr
Option 2:
/content/mysite/language-masters/en_us → /content/mysite/en_us
/content/mysite/language-masters/en_gb → /content/mysite/en_gb