NY/LA: Weather
This really depends on the person.
If you prefer hot and sunny weather year round with the exception of around two weeks of 60 degree days during the winter months, then LA wins.
However, if you prefer regular seasons with extreme heat and humidity as well as extreme cold, NYC wins. California is also in a pretty bad drought, so if you enjoy singing in the rain, NYC is definitely for you.
[Photo via @cambrieschroder]