Redbooks: as good on Sony SACD as on Cary 303?

I have a Cary 303 which does a beautiful job on my standard CDs. However, friends with SACD players insist that their SACD discs are superior to anything else on any other system. I live in the boonies, an audio wasteland, and these friends live in other states...so I can't hear these differences for myself. My CD collection is virtually all standard CDs but I would be willing to invest in some SACDs if I could be certain my redbooks will sound as good. Will you share your experiences with this, please? Thank you.