My 2 cents, if this is to be carried IWB instead of pocket carry I'd vote Walther PPS. Very thin, high quality, reliable and shootable. For pocket carry a Rohrbaugh, Kahr PM9 or perhaps a MK9 if you can handle the weight would be good bets. Not saying others recommended are not good but these are proven time tested winners. Good IWB double stack sub-compact 9mm's options abound (G26, XDSC, M&P, HK P2000SK, SR9c, etc.).