I employ both at different times during the hunt, both are short-range operations, and both are perfectly suitable for 80% of MI hunting. Which do you find more challenging?

I only use a bow or handgun anymore. I find handgun hunting great fun but it is a lot easier because I can shoot farther and to places I could not shoot a bow at. In other words, a shot behind the stand is nothing with the revolver. If I can't turn, even a one hand shot works.
But you are still up close and personal unlike a rifle where you can shoot across the field, so the excitement is still there.