cwilhelmi, Sigs are great quality. I dont own one though. A buddy has a Sig 9mm that Ive shot. It feels Great! If you are into reloading yourself like I am. You may check out what components like shells,primers,etc go for. I know when that Gun(357Sig) first came out, ammo was more expensive than other more common rounds.
I have a Berretta 9mm thats pretty nice! Reliable too.
components for reloading are cheap. Go to gun shows if they are in your area. You find better deals there than in a gun store. Much more selection & competition.
Well thats my 2cents. Happy Shooting!
Mag