I've listened to Bill Evans Waltz for Debby on XRCD for some time now and wondered whether high resolution SACD APO release will be any better, you know what they say, red book is enough, XRCDs are great etc. but eventually I've decided to purchase APO SACD verion... after first few seconds I put the SACD disc into my player I already knew it was a great buy and huge improvement over XRCD.