There're HUGE sonic differences between masterings, and in 99% of cases AF or MFSL versions sound the best
The better the equipment you have, the more differences you find
I can clearly remember when my brother put the separate 'Virgin Killer' CD. I had that "3 Original Album classics" mini box, and the separate CD had much more weight, depth, separation between instruments, etc.
The idea of Gold CDs is to listen to the music in the best possible presentation, without being loudness war victims and all that.
Can't wait to have my copy !!!!