Superior video processing.
Better version of Audyssey processing.
Whether the diff is worth it to you is a different matter.
ps: You can't adequately judge the quality of either the video processing or the amp just by reading manufacturer spec-sheets.
Thanks for the info, but it's a moot point now. I made my buy and it's Sony:
Sony PS3 Playstation (instead of a standalone Bluray player)
Decided to hang into my Polk speakers for now because I can't decide which way to go in that department. Heard about Orb Audio and they look interesting, but there's no way you can hear them unless you live in NY or LA and you can only buy them online.
Was thinking about Mirage Nanosats, but I might go all in on the Orbs. Gotta think some more and do more research.