The LCP seems to be the most popular. The Glock 43 is bigger by enough of a margin that some folks don't consider it a pocket pistol. I passed on it. My pocket pistol is a Sig P238. My wife bought one after comparing it to the LCP, and I liked hers so much I started a successful lobbying campaign that resulted in the arrival of a second one via sled, reindeer, and chubby red-coated guy. The little Sig is noticeably heavier than the LCP, but I find it to be much more comfortable to shoot, and the accuracy is excellent for a pocket pistol. Plus the standard sights are very nice. Not many in that class are fun at the range, but I can shoot the little Sigs all day. My EDC is a Glock 26, but for occasions when I want something smaller, the P238 is a really nice pistol to have around.