I used to think I wanted a compact single-stack .45 ACP, but the Glock 36 I bought, after they were released around two decades ago, convinced me that I didn't really want that kind of gun. I thought it would be a good deep concealment option for my G21. Instead, that thing kicked like a mule, pinched my pinky with the magazine base pad, was sprung super tight, and wouldn't feed Federal Hydrashoks reliably. I shipped it off to Glock once, and they did nothing for the reliability, so I had to choose less effective ammo. I'd love to have a single-stack 9mm hammer-fired DA/SA CZ, but for now I'll get by with my single-stack DAO .380 Sig P290 for my deep concealment and pocket carry pistol.