Tom ,
FWIW which is probably not much, I have never really found any benefit from using Audyssey. People have posted different methods for running Audyssey along with reason's why they thought it was better and I have tried them all without much success. I have since moved to separates and my Pre/Pro has Dirac Live full and I have found it to be a nice improvement. Nothing ground breaking , but the cohesiveness during a movie is much improved. I say if it sounds better to the user then they should use it but if not don't feel as though you have to use RC just because its there.