I have been using Sinwaxing for a few years now for legs, back, chest and stomach hair removal.
I have found their waxing to be quicker, and way less painful than any of the 6 or so other therapists I have had in Edinburgh. I have had some epic two hour sufferfests (ocassionally with small patches of skin torn off), in contrast my last treatment with Sam was under an hour and really only mild discomfort with a perfect finish.
In a search around treatwell, I see the prices are very competitive too.
Wouldn't hesitate to recommend. Sam is professional, knowlgeable and easily puts at ease. Hot wax made it relatively painless and Sam's good chat made the time fly. A revelation. Go!