Jeez what a tough question!
Right now I think I'd take Sandy aka Vega Vixen. Beautiful Eastern European face, fantastic body and it would literally be a dream come true as I've dreamed of fucking her for years. She doesn't fuck men on camera which helps - I'd have second thoughts about cumming in Trina Michaels, for instance. There's a list of things I want to do to her and her to me an arm long.