I’m a lossless audio kinda guy. But sometimes you need to compress – for example, when moving your half-TB of lossless music onto your iPod Classic.
Currently I’m recoding all that FLAC and WMA-L to MP3 @ 320kbps CBR via the LAME encoder at its ‘insane‘ setting.
As best I can tell, within the confines of the MP3 and AAC formats, that’s the best I can do below the lossless option. Is that true? It results in about 4:1 compression, which is, quite frankly, more compression than I need.