Greg, I don't use the term "amazing" for any discs on any speakers, but I and others have recommended great music(classical by me)in excellent sound in the "Stunning" thread already mentioned. I'd mention a special bargain in this Stravinsky collection
available for just a few dollars.
Yes, care taken in recording, mixing and mastering are the controlling factors rather than format, although on average it appears that more care has been taken in many(not all)SACDs. Done properly, the CD format has all the sampling rate and bit depth(44.1/16)needed for human ears and the available music. This was demonstrated about five years ago in a report I read in my AES Journal. SACDs and DVD-As of particularly good sound quality were "downgraded" to CD standards by passing them through 44.1/16 ADC/DAC conversion. In extensive double blind testing the sound remained equally excellent and could not be distinguished from the original.