Model 13s - I love them! I'm lucky enough to own a Model 13-3 that is a round butted, 3.0 inch barrel K-frame. As you may know, this was the last officially issued revolver by the FBI. The Model 13, in that configuration, was on top of my grail gun list for over 20 years. I could never find one, so I eventually bought a Model 64-3 in the round butt, 3.0 inch barrel configuration, and figured this would be as close as I could get. Within the next 2 years, I was lucky enough to find the Model 13-3, as well as a Model 65-3. I really like that K-frame sized revolver in this configuration.
I think you made a good selection.
Best of luck,
Dave