Glock 42 if you want a gun with virtually no recoil. If you buy one make sure you get the magguts magazine mod to make your mags hold 7 instead of 6. (Does not extend the length of your magazine)
THIS. And the 42 is NOT really a pocket gun. Yes, it fits in my bigger khaki pockets, but you can clearly see the magazine. If I try to stick it in a back pocket it barely fits and is quite obvious what it is.
However my wife's LCP disappears in a pocket and is still OK to shoot. Sights and accuracy beyond bad breath distance are horrendous, but I have no intention of doing anything with that mouse gun except engage someone who engages me at close range.