I have been through a lot of different guns to try and find the right one to carry. One of the best is the Sig P232! I now go between M&P Shield 9mm and the P232, both of witch I would trust my life with. Most gun fight don't last longer than 15 to 30 sec, and usually no more than 5 to 8...
I have had two of those guns the S&W Bodyguard 380 and Ruger LC380 Didn't care for either one of them. If your looking for a great carry gun check out M&P Shield 9mm the best carry gun I have every had!!!