I have all the 2002 Stones Abkco SACD/Hybrids and the CD layer sounds ok. I guess I will have to buy a SACD Player to hear the difference on the SACD layer.Just adding an SACD player will probably not do a lot for your sound. On most systems SACD alone will not be that much of an improvement. You have to get your whole system up to a pretty high level for SACD to be worth it.
You'd be better off just accepting that the Stones are a LoFi group and enjoying them for what they are.