A strong set of values is a turn on of the Nth degree! No one should miss out on the true moral purity of his favourite incest mommy. Oh and let's not forget about a solid taste in cutlery of everyones harem members!
All sizes are great as long as it's perky, preference is purely dependent on who it is.
FOR ANIME usually like my super slutty acting ones to have some sort of tits while the quiet and antisocial girls flat-chestnut.
IRL, I like a handful, my ex had perky medium. she called it the east and west tits cus they point upwards and to the sides. imo it was the perfect size, shape and feel
P.s. Ass is 10x more important, won't even try talking to the girl if she doesn't have a round tones ass
All sizes are fine, Big Mommy Milkers for MILFS and smol tits for lolis. But if i have to choose then A or B cups win in the end. I am more of an ass guy anyway.