The Boberg is a different animal...a bit larger, real sights, night sights, +P and 8 rounds. I have the shorty and the long and both are a joy to shoot. I am not a great shot, but with the Boberg I can put 8 rounds in a paper plate rapid fire from 7 yards. Unlike the PM and the R9, it is also effective from 20 yards, at least for me. It is easy to carry. Nevertheless, I mostly carry my R9...Why?...It is considerably smaller, the best carry piece ever, powerful and it is intended for use a bad-breath range so does not require full sights, night sights, or even +P ammo. Just my opinion.