[basicxman]

RobotC is great! I don't recommend NXT-G though as it is limited and I can only imagine the size of the program for an entire FTC robot. As for LabVIEW, I have no comment, great tool, can be confusing to new programmers though and might take a while to become at a level where you can easily program the full code for your robot.

Robot C:
Pros:
Advanced Firmware!
Faster
Uses less memory
Floating point math
Just more math functions in general
Simple little things that NXT-G can't do (i.e. wait for a random amount of time)
Some great debugging tools
Simple interface
Good ol' C