I'm interested in getting into data science. I'm currently a web developer with, javascript as my primary language.

I'm interested in getting into data science. I'm currently a web developer with, javascript as my primary language. I've used a bit of python before, but not too much. My interest in getting into data science is for the benefits it would bring to entrepreneurship (data-driven decision making) and being able to have a better understanding of the big picture. Given this, I am trying to decide which path to go down: R or Python