I actually do carry a PPS, I chose it because it fits my hand and carry desires.
SA XD SC would be the second choice, MrsBFD carries that and if my PPS were out of commission, I'd pick up one of those rapidly.
My other carry is an officer-size 1911, all steel in .45acp, it also meets the requirements of being thin and simple to operate.
Back when I was picking a carry gun, wrong-way safeties like the Beretta slide-mounted one were out, and I think the sig was too wide or just didn't fit the hand, I do remember a caliber-swapping sig being in the running, it was a no-go but not for memorable reasons, it seems.
The problem is, I can't pick a gun for you, you need to narrow things down more and put up some features you like / dislike.
Get a big pile of guns, and run some ammo through them if possible. Then determine what you want for a carry gun.