Hm... I'd say she fits the most the 'average beauty'... DiDi is too tall and got too big breasts, which is attractive to some but at a certain point it's just... too much. Yuki is Asian, Sandra is a redhead (damn you soulless gingers!) and Zii is cute but very punky and I guess not that well endowed. Sonja might have weird character quirks but on the outside she's pretty flawless for the average man, I'd wager.