It pains me, but I'm selling my SIGpro 2340 tomorrow. I'm pained because it's the best shooting .40 I own. I actually took my Glock 23 and Sigpro to the range and shot them side by side on different targets, and the SIGpro shot groups 1/4 the size of the glock 23. In my opinion, the Sigpro is the best way to get a SIG trigger in an affordable package.
Basically, I don't think you can go wrong with a Sigpro. My only beef is that even though the slide is blackened stainless, the mags are carbon steel. I had a heck of a time keeping rust splotches off of them. I finally got some anti rust paper and wrapped the magazines with them while it sat in my safe.
The only reason I'm selling my Sigpro is that I've decided to get out of shooting .40. I found a guy with cash money willing to buy it, so tomorrow it goes. The G23 will follow in not too long. The money will go toward something a little more interesting, perhaps an M1A.
-John