I had a SIG 220 which I traded for a Glock 19. It's very true about the SIG rusting easily, but if you keep after it with a light wipe of Remington synthetic lube, all is usually well. But again, you have to keep after it from time to time. It was also a little bigger than I liked for concealed carry and not as acurate as my Kimber Pro Carry. My Kimber Pro Carry is scarry accurate and it has plain black iron sights. I've never shot the Springfield XD pistol, but I wouldn't hesitate to purchase that gun for concealed carry. I really like the 1911 style beaver tail safety. Back to the Glock 19 it's an awesome gun. Perfect size with 15 round capacity and 9MM is as good as any other round if you do your part (accuracy). Oh and the best thing about shooting 9MM is the price.