If I had to pick a gun from the list, I'd probably go with the Sig P229. If I could pick any gun I liked, it would depend on what locale I were an LEO in. If I were in a large city, I'd prefer a S&W 3rd generation semi-auto in 10mm Auto loaded with Winchester 175gr Silvertips. Were I in a more rural area in which I had to worry as much, if not more, about four-legged perps as two-legged ones I'd probably opt for a 4" S&W 629 loaded with a good 240gr JHP.
Smith, and Wesson, and Me. -H. Callahan
Well waddaya know, one buwwet weft! -E. Fudd
All bad precedents begin as justifiable measures. -J. Caesar