Shoots a thousand times better than a LCP or P3AT.
Almost three times the price though. I used to think "There's no way this Sig can be worth three times the cost of an LCP, they both do the same thing." That was until I shot both.
If cost isn't a factor, then the Sig is the way to go. If cost is an issue, then buy the Kel Tec P3AT and be done with it.
Kahr P380 with Crimson Trace Laserguard attached is pretty hard to beat combination. Easy to shoot and hit with. If you have really big pockets the PM9 is also a great gun in a larger caliber.