I create a new personal web project around 3 times a year, and go through this exercise each time. I am still not happy with the choices out there. The last couple of times I have settled on Python/Flask.

The dismissal of Python and not Ruby over arguments of slowness of execution and dependency issues seems backwards to me.

The main reason I choose Python is because I can jump into a codebase that is years old and immediately understand what the code is doing. Brevity and readability trump just about everything else for me. I also like the pluggable nature of the Flask ecosystem.