I have an RPi 2B+ (I think) that happily runs a Rasbian Whizzy. As an Ubuntu hater, I had to learn to like it, and it is fine. One very interesting thing is that Wolfram Research loaded Mathematica (the software package) on this OS, and so the OS's users can freely use this software without having to get a license for it. It was not too slow for rendering graphics, etc, in spite of the slow processor of the Pi. Great stuff. (Stephen Wolfram is a good giuy, and his books are great.)