Depends on where your hunting. In thicker, darker timber, I'd choose the 8x or 7x for the wider field of view and faster acquisition. Can go to 8x32 to get the same exit pupil as the 10x42, and have a lighter bino also.
For more open country and longer distances, choose the 10x and maybe a tripod for real steady viewing to pick out the details and movements more easily.
Or combine em with a Leica Duovid 8+12
Doug~RR