http://www.sa-cd.net/home is the place to go for news and reviews as well as links to sellers of SACDs. There's a lot of jazz on SACD.
I just heard an SACD for the first time - damn
I just listened to my first ever SACD on my new Marantz SA-7S1. The difference was uncomfortably noticeable, especially going back to listen to a Redbook CD afterwards - the CD sounded pinched and grainy by comparison, like going from a great preamp to a much lesser one. I'm more a smooth and electric jazz listener, so there just aren't many SACD titles for me. Such a damn shame it's not taking off, it's really wonderful stuff!