The thing I like about the 8x42 over the 10x42 is the greater field of view and bigger exit pupil.When it comes right down to it, I want better light gathering binos.Most of the game I spot is just befoe dawn and dusk
and what good is a higher magnification if the bino cannot gather more light to focus on the animal.During daylight I can spot game just as well as the 10 power bino and cover more surounding area without out any unnescessary upper body movement.8x42 all the way.