Camba made a lot of good points. I think it depends on your hunting style and location. Over the years I have tended to move from scopes on my hunting handguns to red dot type sights. They provide good accuracy for revolver range shots (under 100 yards), and are fast to use. I tend to hunt in the Northeast, usually in dark, heavy woods, where the cross hairs of a scope can be slow to find. Now if you primarily hunt in open terrain, with better light, then a scope may be more appropriate. I do use scopes on my Contender barrels, so as to take advantage of their long range capabilities. My favorite deer rigs are a Redhawk and a Smith 29, both with with an UltraDot sight. Iron sights are still a good choice, just not as quick in poor light situations. Key to any electronic sight is to choose a model with decent battery life, and always carry a spare battery. Though I have not used one on a handgun, seems to me a low powered scope with an illuminated reticule might be the best of both worlds, though expensive for a quality model. Cheap glass has no business on a handgun that has any real recoil, as it will sooner or later fail.
Larry