I use Python whenever I can. But honestly, R is still better when it comes to exploratory data analysis.
Some advice: R is digestible (and sometimes elegant) if you only read it line by line. Just try to look at an entire file R file as little as possible or your eyes will melt.
Pandas is great if you have a background in object-oriented programming! If you don't, it has been known to make R-users who don't have a background in computer science very angry.