A current production carry revolver. My choices.
Colt King Cobra Carry 2" or a 3" version. Excellent double action (8 pounds on ours), six shots, hi viz sights available. They're ready to go without any work.
On the less expensive end the SP101. Easy to tune up, rock solid reliable, shoot +P from now on without worrying.
S&W J frame, small and easily concealed, but difficult to master for many shooters (especially Airweights). Don't like the lock. +P will beat them up.
Load them up with a 150 grain bevel base full wadcutter at 900 fps. No worry about inadequate penetration, not dependent upon expansion.