Yeah, mp3 really suxxor for classical music. The cuttoff and artifacts are like the cannons in 1812; they really stand out.
Wma suxxors too, but slightly less than mp3. Classical soundz just a little better, but not by much.
RA is in limbo. I've no doubt it's somewhere between mp3 and wma, but i'm not sure if it suxxs as bad as mp3 or is as good as wma.
Wav is really high quality. Too bad it's *HUGE*.
ACC I've not tried out yet, but I'm about to get around to it. I have a bunch of programs that I found, but haven't played with any of them yet.
I think one uses the command prompt (*shudder*)...