Well, I haven't found anything COMPLETELY complete yet, except my own hard drive (it may not even be 100% but it's the most complete collection of information I've personally ever come across, and I've collected information from pretty much everywhere since as far back as 2001). With that in mind, I AM helping yaten over at
www.ayu-mi-x.com, and EVENTUALLY we'll have the most complete discography on the internet. Eventually.
We do plan on working REALLY hard on it this year, especially the next few weeks. So I guess just keep us bookmarked in the meantime.