For a decent 9x19mm pocket or sub-compact, I'd see the Beretta Nano, the Kimber Solo, the SIG Sauer P290RS the Walther PPS, the M&P Shield.
The P290RS is redesigned & has a 2nd strike system. Be sure you buy a P290RS not the older less impressive P290 9x19mm.
Id also suggest using only factory made rounds for carry or defense. FMJs or PowRball type found. It will feed & cycle in the sub compact.
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