I've owned a p22, and currently have a m&p22 compact and sr22. The m&p is by far my favorite. It's never jammed with any ammo i've fed it. Makes a great silencer host too. The Ruger is nice as well, and hasn't given me any issues, but I really don't like Ruger in general. I bought it before they had threaded versions so no idea how good of a host it makes, but i'm guessing it's fine. The P22...eh. I sold it and never looked back. Some days it worked, others it didn't. And when it didn't work, it didn't work. Not just an occasional jam, like, every other shot jam. Not to mention i drop the magazine when pulling the trigger half the time, along with most everyone that ever tried shooting it. A side note, a Ruger MK anything has been a terrible suppressor host in my experience. I've not seen any of them that will cycle sub sonic reliably.