What programming language or programs do you use for your machine learning?

I just want to know what programming language/ programs are people using for their machine learning to see if I am using sufficient tools.

Currently I am using python with scikit-learn and have not yet work with neural networks or theano. The pros for python are it is easy to use, moderately fast, and libraries are sufficiently developed. The cons are it might be slow for some of the neural network processes.(I am guessing)

I also have used R in the past. The pros are libraries are very well developed and lots of documentation. The cons are it is slower than python and there is a bit more of a learning curve.