JMOfartO:
I believe all 3rd Gen Smiths too be undervalued, under appreciated, and absolutely "under the radar" of the majority of the pistol buying public these days.
Several years ago (2008) when CDNN was selling off the remaining stock of new 3rd Gen Smiths I bought a NIB 5906/6906/3913LS from them, and a new CS9, and slightly used CS45 elsewhere.
All have been excellent.
I use the 5906 as my "nightstand" pistol choice.. I have added the excellent Crimson Trace Laser(grips), and, my my needs I think it's as good a 9MM pistol for that duty as you can buy.
ABSOLUTELY reliable.... All of em', all the time...
The 5906 IS heavy, but that makes it "soft" to shoot... My bride (67 years old/5' tall) loves to shoot it, and is very good with it.
All 3rd Gen Smiths came with a lifetime warranty to the original owner, but I've "heard" where they will often provide free warranty repair to subsequent owners IF the problem is factory related problem.
Another 3rd Gen Smith I am high on is the 6906... IF weight and size of the 5906 concerns you then you can get the same performance in a smaller, lighter, package in the 6906. Using the S&W mag adapter you can use the 15rd mags of the 5906 and they work perfectly, and "look" factory..
If you want RELIABLE, (and I do) you need look no further than a 3rd Gen Smith pistol, no matter the model. Reliability is a given in these excellent pistols.
Best Wishes,
Jesse