Best in my opinion are the ones who can get you going long before you know the size of their dick!
Yup, my wife likes me to talk "trash" to her ... and the more graphic, the better, it seems! She's usually dripping wet long before I apply my tongue on her "lit'l man".
That's ONE thing I have noticed about black guys ... they know how to talk the "trash talk" ... smooth as butter! I think its just natural to them.