Chris, that's a bit surprising(assuming that the Oppo rep was correct)since both DPLIIx and Neo:6 make expanding 5.1 to 7.1 a major feature. The receiver manuals typically state that the DPLIIx and Neo:6 modes are for expanding "2-channel" sources to 7.1. Then however, they have separate modes such as Dolby Digital + Neo:6 and DTS + Neo:6 specifically for expanding 5.1 sources to 7.1.

The paradigm I like to follow is, "do one thing very well", but since the rest of the world is shifting from that, it's becoming, "do everything the best." Too bad no one is living up to that either.