In answer to the question thread, I wouldn't want to narrow it downto one, My best are:
Polish Olivia - an absolute cutie, and lovely girl. As her retiring pressie to me, she let me take her up the arse, after always saying no chance
Lileth, who realised I was dom, and encouraged me in it, great times.
Aimee Snow, who took it to another level!
Welsh Rachel - we really clicked.
Raven - what the cliche "pocket rocket" was invented for!
Alice - another Raven, just a bit taller, and less manic, fantastic at her job!