Another vote for the S&W 586 L-Comp, such a good balance of size and performance (with the right grips).
As several have said, a 3” barrel pairs quite well with a J frame. My number one choice would be a Model 60-4 with grips a suitable fit for me. The stainless finish, adjustable sights, 3” barrel with full underlug make it one of my all-time my favorite revolvers.
Froggie
One of the 3 inch model 19s that were ordered for a LE agency in France with fixed sights and enclosed ejector rod.
Would be hard to choose a favorite out of those I already have. IF money was no object I would like to have one of the first Model 19 three inch guns.
66-2
66-5
13-3
696
65-5
36-6 and 60-4
629-3
547
19-7