I've tried it and I thought it helped with pain but I didn't finish it. The problem I had was that I had to get a lot of sessions in the beginning, which was really expensive. Then once you get to a certain point you only have to get it once every so often as "maintenance."
If I had the money, I defintely would have followed through with it. But my insurance doesn't cover it and at $60 a pop, it just wasn't feasible. I did find it extremely relaxing, though, and experienced a bit of relief.