22lr pistols: I have a MKIII with VQ internals, a pac-lite/VQ combo I built, an IZH-35m, a Pardini SP, and two 1911 .22 conversions (Marvel Unit 1 and Advantage Arms).
The best trigger pull and most accurate is the Pardini SP followed by the IZH-35M, both of which are true Olympic target pistols. The Marvel Unit 1 is exceptionally accurate as well, and the trigger pull is obviously dictated by the frame you put it on.
The Pac-lite/VQ combo I built has a 1.75lb trigger, technically too light for competition but feels great for a Ruger and has a very good break. The Ruger MKIII with VQ internals feels similar, but the break is a little less defined and the pull is 2.2lbs.
I have shot a stock Buckmark in competition and it is superior in trigger pull and feel to the stock Ruger MKII or MKIII, but not as good as either with VQ trigger kits.
My TC Contender and .22 match barrel is my most accurate. My Ruger Mk 2 is next. I have a really accurate little Rossi revolver (if I load Federal Auto Match, especially). My Ruger SR22 is decent accurate for a plinker and even a fishing companion for the occasional shot at a nutria or something. It's light and carries well in a pocket. I have some other .22s I don't shot much or much care to shoot anymore owing to the good shooters I have, like an old Ramline Exactor which is a POS, I'll just say it. LOL I also have a Charter Arms Explorer 2, fuglly thing, terrible trigger, but it's actually pretty accurate and I shoot it now and then. I have a Phoenix Arms HP22 zinc wonder, POS, but I got it going again with a dremmel, who knows for how long. I bought the SR22 to replace the hP22, a good move, but still have that zinc POS. It's pretty danged impressively accurate, though, when it's running right. Then there's this old Erma LA22 I bought used in 1973. It still runs with an occasional jam and the trigger still sux. 
