The best MP3 encoders are Lame 3.90.2 and Lame 3.92. The best command lines are
–alt-preset insane (best quality)
–alt-preset standard (best quality/size ratio, quality oriented)
If you think SoundForge encodes better, please, provide a short sample matching the following conditions :
[ul][li]One of the decoded MP3 at least can be recognized from the original wav in a blind ABX test. That’s why you need to find a hard sample, like the ones linked above, otherwise, no difference can be heard.
[li]The one encoded by SoundForge 6 must sound closer to the original than the one encoded by Lame 3.90.2 or 9.92 with --alt-preset standard (for ~192 kbps bitrates) or --alt-preset insane (for 320 kbps bitrate).[/ul]
At inferior bitrates, we’re not in the very high quality range.[ul]
EDIT : Flac’s homepage, for decoding the samples : http://flac.sourceforge.net/