I'm surprised at the lack of familiarity with the recently released 9mm Beretta Nano. I recently bought one and have come to the conclusion that it's the best pocketable pistol I have ever owned. I've had Keltec, Kahr, Glock G26, LC9, etc., it's like most of the subcompacts - 6+1 - (excepting the G26 with its 10+1 capacity, but then again lots of folks, including myself, don't consider it something that will fit easily into a pants pocket), but the Nano seems to have fine build quality and has been (500+rounds) utterly reliable using a variety of ammo.
If you get the opportunity to shoot one, do so.