The key really to 4 hands though is to try to get the girls to work together. I have found that sometimes they are too much different in pressure ,strokes etc.
This makes it hard to relax and enjoy, except for the end of course.
to me a really good 4 hand massage must be done in uni some. By that I mean they bot work you back etc at the same time, similar pressure and similar actions. Then onto the legs etc. I had a a totally awesome one in Bali a few years ago. No happy ending though as it was in a legit place but it was a great experience.