If you decide to go with the 4 inch, take a look at the 686SSR. It has had some factory action work done, and uses a different main spring, that is 20% lighter. I also think the barrel is a little lighter than the regular 4 inch model. It was $50 more than my 3 inch 686 Plus at my gun store. The front sight is replaceable with out tools, a nice feature.

rat