Longest battery life in a HD MP3 player?

[spg]

Well, the title pretty much explains it. I'm trying to find a Mp3 player with the longest battery life available. Is there any clear winner in that area, or do they all seem to be pretty close? I've done a bit of research online, but really nothing beyond the manufacturers "advertised" battery life.

[Suhit Gupta]

Well, the title pretty much explains it. I'm trying to find a Mp3 player with the longest battery life available. Is there any clear winner in that area, or do they all seem to be pretty close? I've done a bit of research online, but really nothing beyond the manufacturers "advertised" battery life.
24 hours apprears to be max I have seen so far in the latest Creative unit.

Suhit