JMOFartO:
S&W 6906....
Third generation, excellent reputation for durability, reliability, and very accurate..
CDNN is selling them NIB, with a LIFETIME warranty for $399.25. (all steel 5906's also). The 6906 is basically a double-stack 3913 which many agree is one of the best S&W semi's ever made. The 6906 has a standard 12+1 capacity, but accepts the 15rd 5906 mags (with filler)..
I have a 3913 I bought new in 1995 and it has never hiccuped once.. I bought one of the CDNN 6906's a few weeks ago and I'm very happy with it.
Smith & Wesson has as good a reputation for Customer Service as any manufacturer out there (and better than most). You can't lose getting a high quality 3rd gen S&W pistol, NIB, at these prices.
I was considering a Sig P6, but my understanding is that Sig P6's mfg prior to mid-summer 1989 are iffy about feeling jhps.. Most folks buying them seem to be changing out recoil springs, and the DA trigger pull is in need of help too.. And then again the fine P6 comes with zero warranty.
If you have the interest "google" S&W 5906/6906, or go to the S&W forum, (or any other firearms forum), and use the "search" feature and you will find the vast majority of folks who have these pistols are well pleased with them.
Just personal opinion.. Other's mileage may vary.
Best Wishes,
Jesse