i would sell them all and get a kahr CW380 or P380
I'm the owner of a P380 and a Glock G42.
I got rid of my LCP and bought a P380 after shooting another member's Kahr. The LCP is no fun to shoot. Its a bit snappy and the trigger is no fun. The Kahr is much tamer and the trigger is enjoyable to run.
However, the Kahr is still reasonably difficult to shoot well at anything beyond conversational distances. I takes the same kind of dedicated practice that a J Frame requires. The problem is in the tiny grip. When fired 2 handed slowly, it is incredibly accurate. The Kahr is also finicky about ammo. It likes ammo on the higher end of the power scale and when run with what it likes, it totally reliable. But my Kahr was not something I'd trust until it had 200+ rounds through it and I'd found what it liked.
The glock is a little bit of a different beast. I got it originally for my wife to carry. She shoots a G34 very well, but has a difficult time with a G26 or even a G19 mainly because she's not good with recoil. Eventually, she'll get better but in the mean time its difficult for her to carry a G34 around.
I may have done a review of a 42 at some point on NES, maybe even in this thread. Well, that gun, I ended up selling to my father. So today I went to the range with another new G42 to test. This one didn't go as smoothly as the first. For the first mag, it choked on federal and CCI. Amazingly, its first mag of Tulamo ran perfectly. So I shot 2 more mags, durring which time I could feel the gun change how it ran. The rounds ejected farther and the gun seemed to settle in over the course of the first 3 mags of Tulamo, which seemed hottter than the other ball ammo.
Then I went back to the federl and it ran flawlessly, then back to the CCI and again no problems. This whole time, I was shooting at a 6" paper plate hung at 30', and even when doing double taps, both rounds landed on the plate.
The gun was very controllable with the stock mag. But it was even better when using the mag with a Pierce extension attached to it. With the pierce extension it was almost like shooting a .22. Recoil is but a small fraction of what you feel with a Ruger LCP. If you are someone who believes that shot placement is more important than caliber, then this is a great choice.
As it is, I still shoot my Kahr P9 just as well as the 42. But I shoot the 42 much much better than I shoot the Kahr P380.
For me, the Glock is a bit too big for pocket carry. So it doesn't really have a place in my carry rotation.
(It is still SUBSTANTIALLY less bulky than a Kahr PM9)
If I'm not pocket carrying (P380) then the P9 is small enough to wear with any untucked shirt OWB.
But if I was recoil shy, the much much lighter recoil of the G42 would make it a very attractive option for holstered carry
As it is, I'd say the G42 is probably the best defensive gun I've ever shot for people who are recoil sensitive.
Don
p.s. Oh and once it had ;20 rounds through it, the 42 would digest anything you could feed it. Including Federal HST and Winchester Ranger hollowpoint.
p.p.s. One other thing. The recoil spring on the G42 is fairly light. Which again is a help for smaller, weaker people. My wife can shoot the P380 OK. But she has difficulty with its stiff recoil spring when it comes to manipulating the gun. With the lighter recoil spring, she should be able to run the 42 easily.
p.p.s. In summary.
LCP - No fun to shoot. Takes practice to shoot well.
P380 - Fun to shoot. Takes practice to shoot well. Easier to shoot with the +1 extended mag.
G42 - So easy and fun to shoot, you will find yourself bringing it to the range often.