I don't have a lot of SACDs but when using the SL-G700 SACD player the difference between CDs and SACDs are now more easily discernible. I've never heard this much difference before.
I won't so far as to say that it's a night 'n day difference because of all the blowback I'd get but you can just hear more of what's there. It sounds better sorted and more real. There are still CDs that are every bit the equal, sound wise, so it all depends on the recording.
All the best,
Nonoise