Whats the round count on those ancient Sigs though? They're still chugging along, right? Good stuff...especially the 9mm flavors.
DAK is an awesome trigger - I've nto played with their SRT yet, but I love the DAK compared to the standard DAO or DA/SA guns. If you guys must get new Sigs, I would opt for either 9mm 226 DAK guns w/ rails and tac lights for every officer, or the 220 DAK with rail and light for every officer. Screw the .40's or .357's - 9 or .45 covers small & numerous or big & heavy quite well, and neither has the recoil of the .40 or .357.
Or you could always get Glocks. Or M&P's. Or CZ SP-01's. Please, get the bayonet option with them

I'd love to see the look on some douchebag's face when you draw down, and have 6 inches of sharpened steel hanging off the front of your gun