I have both the 686 NO Dash 105.14MM barrel and a Ruger GP-100 4.2". Both are stainless. Of the two, the Ruger has by far the best trigger. I don't feel what my friend BC Rider feels in the trigger. Mine is a straight pull relatively light DA pull. The S&W has a relatively heavy but very smooth trigger pull. Both are excellent shooters and will handle any type of .357Mag load your wrist will take and ask for more. The GP-100 weighs slightly less than the 686, probably because I have lighter grips on the GP-100. The Smith carries the original rubber grips.
I have heard some good and bad things about the recent Smith production guns. If you go that route go over the gun thoroughly before buying. The biggest downside in my opinion with the Smiths is the old fashioned main spring. It determines to the greatest extent the trigger pull weight. It was never meant to be backed off to reduce the trigger pull but often as not, folks back off the retaining screw to lighten the trigger pull. I tried it, had light strikes and screwed mine down again. I love the gun, shoot it well and and happy with it.
The Ruger comes with it's own set of challenges. A good friend of mine calls them the ultimate kit guns. You buy one then complete the build. The cylinders should be checked and if found to be to tight - more than likely - they should be reamed out to .358. I had three cylinders that measure .355 and three that were .356. I had the forcing cone cut to 11 Degrees from the factory 5 to get the most out of my lead bullets. I put a lighter trigger return spring and main spring in mine. I installed shims in both the trigger and hammer. Done!. LOL I use it shooting IDPA. I should polish the trigger group but just have not got around to it.
You could buy the Match Champion and tick the box on some of what I did. The forcing cone and cylinder work would be the two "Must do's" for either version of the gun. You can't get decent accuracy out of a revolver with .356/.357 cylinder diameters shooting .357 jacketed or.358 sized lead bullets.
Take Care
Bob
I have seen reference to forcing cones and cylinders before, but have never understood exactly what is meant. "Forcing cone" sounds like the throat area of the barrel in a shotgun. In a revolver, is the forcing come in the barrel or is it the end of the cylinder chamber?