If your choices are between the GLOCKs I'd choose the 27 because it fires a bigger bullet. But since you want a pocket gun, my choice is a J-frame in .357 Mag. My personal choice is a S&W 649 in .357 Mag. The G26/27 seem a bit too bulky to me for a pocket gun. Some people pull it off great, but for pocket I'd go with a 5 shot .357 revolver. I wouldn't choose a .38 Spl. gun. When ammo shortages come around, .38 Special is one of the 4 calibers that you can't find at all (even harder to find is hollow points in those calibers). In some cases, you can still find .357 mag hollow points. With .357 you can still shoot .38 Spl in it, or you have the option to shoot Magnum rounds in it. If it doesn't have to be a pocket gun, I'd choose the G27. But since you said pocket pistol, I voted Other. I'm told the Ruger LCR is a great gun, but I wouldn't choose a .38 Spl.