[knuckleduster]

here's a way to decide.

1. previous experience: if anyone has any exp with anything use that to your advantage
2. any coding familiarity: when I started coding on my team I knew some syntax from LUA (GMod) and Arduino coding, so stepping into Java was pretty easy for me. After coding the robot with that I attempted to use LabView to edit the HUD for the classmate and was struggling with it because it was far different from text based code, but simple if you know what your doing. If you were on an FLL team you are probibly already familiar with GUI based coding and it should be fairly easy to extend that into LabView
3. just pick one: if none of the above criteria are within reach than just pick one. The more time you spend trying to pick one the less time you will have to learn, troubleshoot and program your robots program.

Good Luck!