The question here is, with all factors equal (brain, attitude, general looks, etc) and the choice of a 5” or an 8” cock (proportionally thick), what would one choose? Well, I would go for the 8” (and I think 9 out of 10 other women) would do the same. With the 5”, you get fucked, with the 8”, you also feel fucked!! And this becomes drastically more emphatic in other than vaginal penetration..