As shouldazagged said, I'm not certain the enhancements are worth the extra cost involved. I have a 640-1, a 340 M&P and my trusty old Model 60 no dash. Through repeated dry firing with snap caps, you'll get the smoothed-out action so many are looking for. I've got to say I like the idea of the moon clips for quick reloads and ease of carry of spare ammunition, and improved sights are never a bad thing. However, it all depends on what you want to pay for the enhancements.
Unlike some, I believe that an improved trigger and sights are a good thing for greater accuracy. While it's not likely that you'll be using the J-frame for bullseye shooting, better accuracy can be needed under certain conditions, and sights and triggers give you that. For me, I'll work the action for trigger improvements for the most part. I might (and have) even change out sights where possible, but I doubt I'll spend a lot of money for these enhancements on an off-the-shelf gun. About the only thing I can't do myself is to cut the cylinder for moon clips.
