I really haven't decided either way yet. Audyssey has come a long way since its early forms, and the MultEQ version apparently yields good results in most cases. There has also been some chatter in a couple places about an alternative or two that could be on par with it (one that I've seen just a little bit about is Trinnov). For the 970 replacement, I don't know that I'd expect to see either, although some form of automatic EQ would probably be appreciated. For the 990 replacement, interest in something on par with Audyssey is likely to be high.