Java is my primary due to both my university and Android depending on it. Other languages I am familiar with include C, C++, C# and obviously Pawn.
I would love to get fully into Python, it's just a matter of time. Perhaps I will have more time at the end of the year to learn it.
C Sharp all the way.
I love C# and the tools Microsoft provides. Microsoft generally treats the developers very well in terms of tools. I would prefer C# to Java (I don't like Oracle) as it seems to be more modern.