I have a couple of original Ruger .22 Standards, a Mark II .22/45 w/ 5.5" barrel and adjustable sights, and a fairly new Mark III .22/45 with fixed sights adn 4.5 inch barrel. I like the Mark III .22/45 because of the 1911 ergonomics AND the flatter grips. I put skateboard tape on the front and back strap of the Mark II, the Mark III gives me a secure grip without it. I carry the Mark III IWB around the place for ground squirrels and prairie dogs. The trigger pull on the Mark III is the worst of the four Rugers. My reliable local smith said the trigger/sear interface had the toughest surface hardening he's encountered. Brownell's service dept. recommended not stoning the sear or trigger lest one destroy the surface hardening. The trigger pull has smoothed up a little with use. Volquartsen has an trigger sear upgrade, but I am reluctant to spend 2/3 the price of the pistol on a trigger job.
Coyote3855