I had the 686-3 and found it to be a fantastic shooter. Imagine my glee when I couldn't talk Jim (WFR) into buying the 686-4!!! (the -4 has the case colored hammer and trigger and wild grips)
I bet it never had more than 6 rounds through it like the owner said.
I opened it up and smoothed it a bit now they both have great actions, I just need to shoot 'em...