I heard that Boston SACD last week on a friend's really fine-sounding system. Pretty dreadful recording. That said, many SACDs -- rock or otherwise -- show little improvement over comparable CDs (and especialliy, LPs). But some are truly excellent by comparison, e.g., the Abko-remastered Rolling Stones discs, unfortunately now hard to find.
As others have noted, you're wrong about newer recordings being inherently better-sounding than older ones. Some are, but many aren't. Depends on the skill of the recording engineers as much as anything else.
As others have noted, you're wrong about newer recordings being inherently better-sounding than older ones. Some are, but many aren't. Depends on the skill of the recording engineers as much as anything else.