Depends where you go, Post Office Avenue and Chaba in Tulketh Street - both Southport; I've had 4 hand in each.
Post Office Ave at least a year ago, went straight to the front, never bothered about back massage, one started at the top while the other started at the bottom and met very nicely in the middle. Never really knew who had hold of what, I was busy letting my fingers do the walking ..
Chaba was similar, tho when it got to the interesting bit, one left.
A 4 hand is a great experience, especially when extra's are involved. But can be costly, that's why for me it was a once (or twice) only experience.