Sometimes I think these threads are fun, but on a practical level, not very important. Any of the guns you are considering would likely serve you well. As long you stick to a quality manufacturer, practice with the gun to stay reasonably proficient, and take reasonable care of the firearm you will be okay.
In truth, the likelihood is that you will go your entire life and never need your concealed firearm for its intended purpose. If you do need it, it most likely will be a one or two round event at very close distances. With modern ammo there is not a lot of real world difference between the primary concealed carry calibers, so again, you won't likely be in trouble no matter which of these good revolvers you choose.
Personally, I've been carrying my 642 since I received my concealed carry license. With 5 rounds of Hornady Critical Defense ammo I am confident that in an emergency I will be as well protected as with any gun. As my eyesight is not what it was, nor are my hands as steady as they once were, I added a Crimson Trace laser, but even with that I am most comfortable with hitting what I shoot at with about a 7 yard maximum distance. I can shoot some of my other smaller handguns more accurately than I can the 642, but the light weight and concealability make it the gun I usually grab before I leave the house.