I only brought two pistols. Steyr M9-A1 and CZ75B Stainless Steel. We only shot two to three hundred rounds each. still no malfunctions. Scratch that. I did have one round of monarch blue box that would not fire. The primer failed to ignite the round after several pulls. Not the guns fault. My friend liked the CZ best!
another positive that I don't think I've seen in a while about the CZ's is that you can fire the laquered steel cased ammo with no problems.