I have three J frames and enjoy shooting each of them:

Model 34, .22 - great fun and inexpensive
3" model 60-15 - It's hard to get any better than this, also my favorite to carry in the woods
2" 642 - As it was said above, the 2" snub is more capable than most people are. I get a kick out of running 8" plates at 15 yards or engaging a target at 25 yards in front of people who are convinced that it's useless past five yards