I bought a lightly used NP-34 from a forum member a couple of months ago. I have so far put 300 rounds through it. Zero issues with feeding, ejection, etc. I have been using the BDX commercial reloads with 124gr. FMJ bullets.
The SA trigger pull is very reasonable, the DA is quite heavy. It is smoothing out and getting better, but still heavy IMO. The Norc mags work fine for me with no problems. They are even pretty easy to load, much easier than a Glock mag.
SIG quality? Nope, the finish is not nearly as nice but it is certainly acceptable and not at all rough. The edges are fine, too, nothing sharp and nasty that I have found. Overall, it is a great value in a $350 pistol and more than adequate for my uses.
Mark