Great answers so far, as expected...it is P-F afterall.
And now for something completely different: the Ruger LCR...the Ruger LCR.
Everyone should have a snubbie of some flavor, I prefer the LCR to the j-frame, YMMV.
You can DA dry fire to your heart's content and as is often said around here, getting good with a snubbie will make you better with larger pistols.
You can get the LCR in 9mm and not have to add another caliber to your world, if that matters to you.
Per Ruger, you can dry fire the .22LR version of the LCR and as you master that heavier rimfire trigger pull, you will again reap even greater benefits when shooting other platforms. And since it's a .22LR, you can pretty much live fire to your heart's content and reap all the benefits.