If I had to have a 357 magnum I would be happy. I have a 6" 686 a 3" model 13 and today brought home a 640 PRO.
I had a 640 when they first came out, loved the gun, traded for a 360 PD that I thought was the next evolution, it seems Sc-Ti revolvers do not stand up well to lots of magnums.
For an all around revolver it is very hard to beat an L frame Smith, they can digest thousands of magnums with no problem. The K frames last forever if you stick to the heavy magnums (158's), the 125's and 110 cause throat erosion problems when fired in the thousands.
I believe Smith and Wesson make the best revolvers today. I could not be happier with the fit and finish on my new addition.