I've had my fair share of special massages at AMPs. Some good, some bad, but I've found a place that is fairly consistent. I do the occasional rubratings visit, but I tend to stick with AMPs (they have the testicle teasing down to a science).
I've lately been wondering if an AMP masseuse might agree to tie you down, if you were to bring rope? Does anyone have experiences with this at an AMP?