I would go with a pair of 40 or 42mm binos in 8 or 10 power from a quality maker like swarovski, zeiss, or leica. I definately wouldn't pick a pair of 50mm binos for hunting, they're too big and bulky to be used in the field. Hunting binos end at 42mm. A 40 or 42mm pair of binos from a top end maker like the three mentioned above will be brighter than any 50mm binos from a cheaper maker.