I don't think this has been mentioned but for a light field gun, I prefer the .44 special. It's a good finisher when hunting, good for critter defense ( within reason ), and for snakes, a shot shell or 2 works out of a revolver.
Try it out of a semi auto and you'll end up with a jammed up single shot.
On the streets? It's just a matter of preference in weight, size, capacity and what action you trust.