I have two of them and my thoughts align nearly word for word with most of what colt_saa posted above. My first one was a purchase that I hemmed and hawed for a long, long time over -- back in 2011, I wanted to buy my first BETTER 9mm gun. By that, I wanted something that:
--was more than "combat accurate"
--had a single action trigger that was noticeably better than typical
--had decent sights that would promote small group shooting rather than roadblock it
Now I am a Smith & Wesson semi-auto pistol guy through and through, so please don't take this the wrong way when I say... I was looking for a 9mm pistol that would easily distinguish itself beyond a box stock Beretta 92, a S&W 5906 or 39-2 or any of the piles of Tupperware 9mm guns.
That's what I wanted and I wanted to accomplish that without going the 9mm-chambered 1911 route.
The Tanfoglio "Witness Elite Match" was the answer for me. More than anything, before I bought it, it was the single action trigger feel that made me take the leap. The sights don't offer as good a picture as a Bomar or that Super Sight that colt_saa pointed out above, but it works. The accuracy of this particular pistol is simply beyond what I think most folks would believe when I say it.
In the years that followed, I have been fortunate in that heavy hours at work has afforded me a little more luxury in gun purchases, and I have since added many top-drawer 9mm-chambered guns but yet, I have not been able to eclipse this Tanfoglio with any of those guns so chambered in 9mm.
This is a pistol that I got absolutely brand new for $559 after shipping and FFL. That's $559 in my hands in 2011 money for the 9mm that continues to out-shoot my 952's, PPC-9, 3566 Limited, SD-9, Pro Series 9mm, etc etc on and on, so on and so forth. Some might suggest that my life is missing a Sig P210, but I doubt I'm going to take that route.
Where firearms are concerned, my passion in this life is Smith & Wesson Performance Center Limited target semi-automatic pistols. These guns are the epitome of why I own and love handguns. That my totally 100% box stock Tanfoglio continues to distinguish itself among them is the highest praise that I can offer.