Shop the single stack 9mm pistols. I bought my wife a Kel Tec PF9 for CC and its proven to be a reliable, thin pistol. Lots of choices out there, but when you intend to actually carry a pistol daily, weight and size become more and more important. Not everyone wants to carry a heavy or wide pistol.
I'm one of those people. After going through several carry guns I arrived at pay dirt with the Sig P938.