No I haven’t looked into it, but I will check it out. However, I based on the results I’ve heard with the stock Audyssey setup I can’t imagine giving them another $500 especially considering there are at lest 15 things I can think of off the top of my head that will improve my listening viewing experience better than a more expensive version of Audyssey.
I haven’t really looked but have you seen any independent testing done to verify what Audyssey is really doing (results), as I understand the concept. Everyone seems to have an opinion on how it great/poorly it works but getting any real information seems hard to come by.