The Smith and Wesson is the only one I've owned that's really good. The current model is I believe the 617.
My Charter Arms Pathfinder actually has a decent trigger, but it needs to go back to the factory to be made reliable.
The rest I've owned have had poor triggers or other problems. The single-action ones tend to have decent triggers and work well.
Not only does a 22 rimfire require a stronger strike, but small-framed revolvers also have worse trigger geometry. Most DA 22 revolvers are on small frames, so most of them have poor triggers. The S&W Model 617 and precursors are on a medium frame and typically have good triggers.
The single-actions are generally good - if you want nice sights, go for a Single Six. The good autos are more bang for the buck. A Ruger Mark or Buck Mark will shoot better than any 22 revolver that's not excellent. If you want a really nice DA 22 revolver, just pay for the Smith and be happy. That's what I finally did.