I haven't watched enough of Sara to comment on her -- though her figure is memorable from the couple of things I have seen -- but Lisa is a pro and she comes across as very dirty and sweet at the same time, which is what the fantasy is anyway, right?
I think I might have posted this somewhere on the boards before, but I saw a scene once for some kind of MILF site where Sparxxx is supposed to be doing the scene for birthday money for her kid. Anyway, the cock gets shoved in her face mid-conversation almost and she doesn't miss a beat, goes right into it.
Nice!
She looks so good riding and has just enough of everything to hold onto, plus she has a nice smile. What's not to like?