Conclusion: The Sony Network Walkman NW-E505 offers good sound quality in a very attractive package. The battery life can't be beat, but the required SonicStage software and lack of WMA support hold it back a bit.
Pros: Very long battery life. Attractive design. Decent earbuds.
Cons: SonicStage software is clunky and difficult to use. Repeat/Sound button is awkwardly located and tough to press.