Sig p220
I carry a SIG P220 .45 auto every day for work and I absolutely love it.
I've trained with it till I was blue in the face, carried it, deployed it, rolled around in the dirt with it, done tactical reloads and excercises with it getting loaded with sand/dirt/mud, I've had it caked with snow and ice, in the baking sun, soaking wet, bone dry, and EVERYTHING in between. I've put countless rounds of all makes and qualities down the pipe on my professional and private time, and I can say with confidence that I would highly recommend it to ANYONE. The thing NEVER EVER fails me. I have relatively small hands, and for a full size .45 this sidearm is extremely comfortable and smooth as silk. Very manageable recoil and sight re-acquisition. Tritium night sights with an accessory rail as well. In fact, my Chief even said during the last round of qualifications...."What are you doing, drawing smiley faces over there?" Spot on.
The only drawback being the mag. size (8+1).
I just can't say enough good things about this sidearm, say nothing of the fact that they are built right here in NH!!! Good luck with your decision.