I also own the Dac6. The Dac6 makes regular CD's sound so good, it is amazing -- could easily eliminate one's dissatisfaction with redbook and digital, but still -- the SACD playback is even better.
Great SACD's --
Alison Krause & Union Station -- Live
Alison Krasue & Union Station -- New Favorite
NYPO, Leonard Bernstein -- Aaron Copland, Appalachian Spring
John Coltrane -- Soultrane
Chet Baker - Chet
Charles Mingus -- Mingus Ah Um
Ray Brown Trio -- Soular Energy
Ray Brown, Monty Alexander, Russel Malone
Art Pepper -- Meets the Rhythm Section
Sonny Rollins -- Saxophone Collosus
Sonny Rollins -- Plus 4
SFSO and MTThomas -- Mahler's 6th
Maazel -- Moussorgsky: Pictures at an Exhibition
The Police -- Entire Collection
Creedence Clearwater -- Bayou Country
Patricia Barber -- Modern Cool