I've owned the 22A and currently own a buckmark. Haven't owned a ruger, but have shot one. I would get the buckmark. The grips are nicer, the recoil buffer isn't paper thin, the barrel doesn't have the serial # on it so isn't considered a firearm just to replace it... and the trigger is the nicest trigger of any .22 pistol i've fired right out of the box (i've shot the P22 as well, and though it was trash.) My 22a had a lot of problems with some kinds of bulk ammo also, whereas the buckmark has been very reliable - sometimes going 1400+ rounds in a sitting without cleaning with no problem. The ONLY thing i could say that is remotely negative about the buckmark is that the screws holding the rear sight on need some blue loctite on them or they vibrate loose every ~500 rounds. Granted, to add a red dot sight i would have to spend ~40$ for the buckmark...but i found that the rail on the 22A was way way too wide to attach any of the cheaper red dot sights i found locally. Why the heck S&W made the sight rail so excessively wide is beyond me.