DO you folks like one caliber over another for a GS? I shot @ Indy and used my G-37, while my buddy used my G-19. My brass was a write-off, while his didn't matter... Thinking about going to Marietta, and just am too darn cheep to wanna leave much GAP laying on the ground over there... Thinking of shooting it in 1 class, then the 9mm in the rest of the classes I shoot. What do you guys do? thanks.. ps. Do NOT read this as a complaint on brass picking rules!