Compact 9x19mm pistols...
With the increased interest in concealed carry & the demand for compact semi auto pistols, there are a # of well made choices out there.
The Beretta Nano, the SIG P290 DAK or P239 SASII DAK, the M&P Shield, the Ruger LC9, the S-A EMP, the Kahr models, etc are all worth a look.
In a 9mm, I'd lean towards a P290 or P239 DAK with night sights. Many gunners like the new M&P Shield pistol. If you want a slightly larger pistol, the HK P2000sk LEM or a PX4 sub compact could do very well(and take the larger pistol mags as spares).