While I feel that SACD is technically superior, they both still rely on the quality of the mix/master, so the end result is that they will likely both sound the same or too close to call, so take a look at the discs to see if there are any differentiating features and pick one. Nine Inch Nails released The Downward Spiral on both SACD and DVD-A (DualDisc) and the SACD included a second disc with tracks that were not available on the DVD-A (I bought both), but the DVD-A had some bonus video tracks as well. If the SACD is a hybrid, you can also listen to it on other CD players as well as rip the tracks to disc, another plus in my book.