*Pushing through the crowd* I might know a thing or two on this subject.
I would highly recommend Elsi Dawson. She has been known to be quite cruel to me with tie and tease, whether it be with her mouth or her hands. I remember one time she had me tied up, put a condom on my member, smiled, and just as she was about to have me enter her, she pulled back and said "like I would ever have the likes of you in me!" I should really know better by now, but her giggle alone is worth the trip out to Vancouver.
Oh! There was this other time where she came out in a new pair of yoga pants and grinded me into a puddle for 90 minutes. I don't remember exactly but I'm pretty sure I had to be scrapped off the bed when it was time to leave. If you have never heard about Elsi before, she really does enjoy her work and I would crack a beer with her any day.
If you're nervous about getting tied up by someone you don't know, Elsi is easy to get along with and has plenty of reviews and such.