My all time favorite Snub Nose period is the Smith&Wesson Model 60 in .357 Magnum. Carry mine daily, absolutely love it. Wouldn't part with it for anything in the world.
My vote goes to the model 60. I own both the 60 and the 637. Personally I pteferr the slightly heavier frame on the model 60. Just feels better balanced to me. And its ability to fire .357 Magnum is a huge plus in my book. Its by far my favorite j frame. You won't go wrong with a model 60.