if you have WinAmp and SoundForge on the same computer, you know what im talking about.
OggVorbis, compresses with 100% accuracy, almost no chance of it getting screwed up, its careful in the compression process, and maintains near perfect quality, at a smaller file size. (1/3 of the file size, uses Lossy compression). At the cost of compression going slower and is less supported (WinAmp5 doesn't even support it anymore, i love WinAmp2.91) OGG is also open sourced and free! As in you dont need a license to use it in your production (good for game devs!)
MPEG Layer-3, (mp3), compresses faster, at the exception of sometimes (not often) the wave being a little messed up, quality of music goes down, with the addition of being supported by a good majority of music players (winamp, realone, quicktime, etc). (MP3 is copyrighted and you need a license to use it.)
if MP3 and OGG had the same popularity rate, which would you personally be going for, knowing these basic facts.