CA1500 vs. SA1309 - Which one wins?

Question

I\'ll prefix by saying that I understand that both Code Analysis and StyleCop are meant as guidelines, and many people chose to ignore these anyway. But having said that, I

Answer 1

Based on what I've seen from Microsoft themselves, I say CA1500 wins.

If you look at the BCL, most of the code prefixes local fields with an underscore.