Something I find odd in these fidelity comparisons, is the nature of ambient music in comparison to say, acoustic instruments / vocal recordings.
I can see purists having a problem with less than loss-less audio for certain types of music, but I think ambient is an odd one in that a large amount of 'electronic' sound is used in its production and while high fidelity is desirable (in my view), I'm wondering what the detrimental effects of 320 kbps mp3s might be in the case of ambient ?
Soundstage, stereo issues, high frequency distortions etc ?
Iīve enjoyed reading this post

Well, people enjoy to hear birds in the middle of the night!

I made a test on Cubase Forum some years ago...3 mp3 files...
3 files, titled as A, B, C while the order was mixed . No one was knowing the compressing. I used 3 compression rates (128, 192, 256)
Then i ask the people to tell me the order, starting from best quality.
The most funny thing of all was, that no one of the "big speaker" and "i definately can hear this guys" in the thread actually told their opinion...hahahahha....after some months of voting the result was a pure mix of anything. There was NO tendency for a specific file.
But you know, itīs nice to hear birds in the night, because then there is a reason to discuss and complain.....
Cheers,
Tomas