You should carry the platform you manipulate the best in the most powerful cartridge you can control. I have more confidence generally in the medium bore .357 and big bore .44s and .45 Colt and ACP. For all the adulation being heaped on the 9x19mm with the newest bullets I have less confidence in my issue 229R and soon to be issued G-19 than in any of the medium and large frame revolvers or Browning automatics- the 1911 and Hi-Power- to deliver the most adequate ballistic performance at any range more easily. Despite having tens of thousands of rounds through the SIG and Glock now, I can still hit more surely, easily and with more confidence with the other pieces. If stuck with the 9x19mm, the 1911, CZ-75 and Hi-Power are superior.