Re: looking for a light weight gun to carry
You named 3 pistols that you are considering carrying. Just out of thin air I'd like to make a statement on the PPK (S&W) .380 in stainless steel. I carry one. It is pricey (between $400-$500), has no manual slide release and is quite heavy for a .380. You wisely omitted that one from your llist.
On the positive side, it has never misfired or otherwise mal-functioned, and being stainless steel I don't worry that much about it getting wet from rain or perspiration. Has a 6 round single stack mag. The mags with the finger rest are very comfortable to use.
Not to open a can of worms over the .380 vs 9mm debate, a conceal carry gun is intended for point-blank use. I think someone gut shot at 5 feet could'nt tell you if they were shot with premium defence ammo was a .380 or a 9mm.