Are these weapons issued, or personal purchase, and how difficult is it to switch? You may be able to purchase a good pre-owned .357, and a spare, for less than a SIG. Glocks can be obtained at very low "letterhead" prices from distributors who serve the LE market. Regardless, I would try to find a way to shoot all three. Like Werewolf mentioned above, I tried Glocks for two years, and could only shoot so-so with them. I bought a SIG P229R with the DAK trigger, and the first time I shot it, COLD, it was on my agency's qual course, and I shot it better than I had ever shot a Glunck. As for sixguns, I make no claim to greatness, but I shoot medium/large-frame sixguns better than any other handgun. I am not worried; I shoot the SIG well enough at short range, and I work at night, where real-world engagements are usually very, very close, but I take advantage of the broadness of my agency's firearms policy, and carry TWO backup .357 revolvers to work with me. One is a concealed SP101 snubby, and the other, a 4" GP100, is kept cased in the front seat area. If I could turn the clock back to 1997, I would "grandfather" three or four .357 sixguns, under the old policy, so I could still wear a .357 in my duty holster. (I must now wear a .40 autoloader, bought with personal funds, chosen from a list of four models.) I was in one of my 1911 "phases" in 1997, though, and had foolishly set aside my sixguns for a few years, and grandfathered 1911s. (Long story, but I set the 1911s aside in 2002.) One more thing: Our guys and gals have the Glunck G22 and the SIG P229 as two of the duty pistol choices; I have heard MANY say they wish they had paid the higher price for the SIG. NONE who have chosen the SIG regretted the decision. The best "shots" in each academy class usually carry SIGs. BTW, they start with the decocker models, not DAK. The DAK is a gray area in our policy, and the cadets have to live in a black and white world. I hope some of my rambling might be useful. Good luck with your new career path.