I can't choose one over another but my favorites in the past and present have been:
Crystal, Claudia@HFH and Sydney (retired), and Cameron(retired) for that tall, lean, silky smooth body and facial attractiveness.
Amber@HFH for the perfect face and curvy, hot body with milky skin with April@Allure in the same boat but with a naughty S&M twist to her.
Jade@ SRM and Alexis (retired) for that perfect combination of facial looks, rockin's bodies and great personalities.
Yes, Tarah(retired) makes the list because she had a bit of everything plus being the ultimate GFE when you caught her in a good mood.
They're all different but they're perfect because they all had/have an aura of confidence and sensuality that adds to the physical looks.