I saw DirtyStella a few weeks ago. Most recent (rather lame) feedback is mine.
Maybe a 7 out of 10 due to no kissing or seduction and a not-so-great location (near Harringay Green Lanes station, so on the plus side great for Argos). She does great OWO though, and I'd see her again, optimistically hoping for more rapport second time around. I can vouch that she isn't a post-op tranny