While the real answer is whichever you shoot the best but Ill give you a typical gunstore ( i worked at one for a year and half, it doesn't sound too far off) answer....
Back in '03 I was part of a three man recon team working for an agency so secretive to even mention its acronym sets off NSA computers and I would be sent to gitmo. We got a mission to a larger country east of Iraq if you know what I mean. Since we are so incredibly elite and tactically superior to any other acronymed agency we get our pick of weapons. I had always wanted to try out the SA mil spec so I picked it along with a G36K, two p3AT's and a buck 110 knife.
Once we got to the rendezvous point we were ambushed by ex taliban troops. to make a long story short after I had emptied all 9 of my G36's mags into the swarming troops and was wading balls deep in dead bodies and blood. I had to grab my sidearm to finish off the High Mullah and his guys.
I grabbed my 1911A1 and I could feel the hand of god on my shoulder. The gun was handed down to the prophet John Moses Browning as Americas providence in killing all non-christians, and the true sword of God. My first shot of 230 grains of Golden Sabre justice blew the mullahs head into two equal pieces. I turned to shoot his fleeing aides but I noticed the hollow point had jammed on the feed ramp.
Luckily on one of the dead bodies there was a Sig P220. I picked it up and fired three full mags with no failures into various taliban officials. Yep that gun saved my life, my teams life, and the lives of the villagers down below whom the Taliban was about to pour molten lava onto from high above the village. The Sig Sauer P220 DA/SA is the true tool of God, JMB was a false prophet sent by the devil to deceive man and give them inferior weaponry when his armies rise out of hell.