Although I am not a big fan of semi autos I do have a couple of Bersa's which seem to function quite well, very reasonably priced. the .380 conceals quite easily, not sure about the 9mm.
I know you are looking for a 9mm but I have never owned a semi-auto that didn't "hic-up" every now & then, so when I need to carry I toss one of these in the pocket when needed (I prefer the 442) it goes Bang every time. jmop
http://www.dayattherange.com/?p=68