Microsoft Pick: Visual Studio 2017 Preview
Paul Thurrott's app pick on Windows Weekly 509 is Visual Studio 2017 Preview, which launched alongside Visual Studio last week. This allows you to test some of the new features before they come out.
The big reason to get this is to get Python support, which the final version did not have yet. So if you get the Preview version, you can install a Python workload, test it, and give feedback to Microsoft.