The 642 is the gold standard of snubbies. I have one that I like well enough for the purpose. I don't find DAO J-frames to be that fun to shoot in general (though they are helped by a good trigger job), but I know it'll work every time I need it to work so I always make sure to get a few rounds through it when I get to the range. Whatever you do, go hammerless. Protruding hammers are too likely to snag in your pocket by all accounts.