from my experience it depends on the lake and how aggressive the fish are that day!! i know that ronnie capps hand picks his for tour.also !!!!!!! i know at lake washington they don't like the larger bass minnows!!! more of a medium (#6) seems to work best . i also noticed larger minnows seem to attract more of the toothy fish (gar) . i don't like the small ones because they don't live as long and are hard to stay on hook!!! i have heard some of the pros say they like larger minnows in tours because the smaller crappie want bother them as much !!! so i'll have all in medium !!!!!!!!!!!!