I am trying to put together a list of matrix decoders that will do 7 channels from a stereo input. I know of Logic7 and Pro Logic IIx, do THX have a version? What others are available? It is worth mentioning this is for music replay so I have not mentioned Neo6 and Circle Surround, as IMHO they do not sound that natural with music. I am not trying to provoke a debate just need to put a list together.