I can never figure out why Sony didn't really push these more/harder. I made tons of my own discs (akk, mixed tapes!) and they sounded great. hey could be recorded over thousands of times with no sound quality loss. I really liked them. Sadly, caught up in the iPod current, I too left them behind for the lure of Apple. I don't understand why Sony didn't put them in every computer they made though? They could have been used as a CD replacement.