Bobbi Starr. Both of them exude the same energetic sex in their scenes, but Bobbi actually seems like a down-to-earth person, as opposed to Sasha's head being inflated from appearing in a mainstream movie, a mainstream television series, and just being overrated in general.
I also think Bobbi's prettier, she actually has some figure and everything, Sasha just looks like a stick with tits, something like that doesn't attract me at all.