If you're a classical fan, there is quite a healthy catalogue on SACD, and more coming out all the time. Selection in popular music is spotty, though... I doubt we'll ever see SACD approach the mainstream, but it seems to have established a stable niche, with many smaller labels issuing excellent releases.

To my ears, the distance between a stereo SACD and the very, very best CD's is pretty thin. But the percentage of SACD's that are excellent is much higher, I can only think of a couple that are lackluster. Plus, you have the option for surround sound. Bowie and the Moody Blues, just to pick two at random, are glorious in surround.

Nice setup you've got, too!