If you go with a revolver, I would get hammerless. it still has a hammer, it's just covered with a shroud. This helps keep it from snagging on clothing, which is helpful especially if you pocket carry.
What weapon you carry is a very personal decision though, so I honestly don't think I can help you pick what to carry without throwing in my own spin and bias. I know what works well for me, and that's about where I draw the line.
Find a gun you can shoot well, fits you well, is reliable, you can carry comfortably, and has the stopping power and capacity you're looking for.