I don't think there are a lot of opus users, they haven't seem to taken off like Eidolon's have. Then they add another model it just gets hard(not to mention expensive) to keep up to date.
Avalon Opus v Opus Ceramique
As I'm interested in purchasing one of the Opuses I wonder, does anybody have any experience with these two speakers? I'm interested especially in bass quality (and quantity) difference!