I plan to use the Pi to think the Arduino.....mainly have the Arduino gather the data and the Pi analyze it and make decisions, and then once the decision is made, send the appropriate signal back to the Arduino to perform the specified action.
Am I better off using Raspbian or Windows on the Pi if this is my plan? I am much more familiar with programming C# in Windows, but would be willing to learn Linux if it is going to be more powerful.
Can I use C code if I use Raspbian or am I forced to use Python?