A couple problems with the slide locking open mid-mag, that was my grip being too loose/close to the slide lock lever. A couple FTF, where the spent shell ejected, but the next round didn't chamber completely, cleaned my mags that seemed to be the problem. This was in the course of a couple thousand rounds through a SC40. I did have one question about the spring assembly, because the outer spring could be slid off the rod, and when I emailed SA, they asked for a round count, and shipped me a replacement guide rod assembly that got here in 2 days.
I have had nothing but confidence in this gun since I got it, and it shoots beatifully, even for a sub-compact.
Every experience I have had, or heard about with SA service has also been surprisingly good. Not too often you get good service from a support line these days.
"The Sound of freedom is a .45 empty bouncing off the ground" ~ Rob Leatham