Well the big picture is pocket size .22 can be a little ammo sensitive, and sometime can be a crapshoot. The PT-22 owners guide mention not to use Hi or hyper velocity round, however some people use them without a problem (could be a CYA move to prevent litigations). The Taurus and the Beretta 21A are almost clones of one another with the Taurus being a DOA trigger and the Beretta being DA/SA. Beretta is of course a little more expensive and berretta quality has dropped slightly (replacing metal part with plastic, etc) and Taurus quality has improved. Do a search, some had problems, but most people like them and they seem to last a while. Stay away from the rosewood grips, they look pretty but can be fragile. I had a used one briefly (traded it becuse I have 3 other .22 handguns) and liked it, and I'm considering buying a new one myself. It's accurate for its size, the trigger has a revolver like pull, and it never gave me problems, but it was used and worn in when I bought it. I like the fact that its the only .22 pocket pistol I'm aware of the is currently being used by the US military. Search and rescue teams carry it as a last ditch and survival weapon.