SACD

sabrejet

Nice score- which player did you purchase?

SACD, as a medium, has a strong Classical music catalog. Jazz titles as well.
For smooth Jazz, check out Bob James 'Espresso'.
For classical- start with your fave composer. 
I am a big fan of SACD with around 200 titles in my collection.
Have fun and enjoy the Music!

Happy Listening!

Here's an excellent 10 - SACD box set: Mahler Symphonies 1 - 9 Valery Gergiev/London Symphony LSO0730. Recorded live! I have it in my collection!

Congrats if your system is revealing you should notice a big improvement. Pure SACD recordings are best, but a lot of music is hybrid, meaning the music is available on those discs in multiple layers. The deeper layers MAY not play back as clearly as one would like

hth