The Ideal CD Image Format?

The trouble I've had recently with dual data track iso's has got me thinking. Issues like ease of use and computer compatibility aside, what is the best format for ripping game CD's? Specifically, unprotected CD's like what we (basically) have with the Saturn and the Sega CD? Does anyone know if there are any formats which are guaranteed to properly record all of the information from the original disc and allow it to be properly rewritten to a CD-R?

With all of the talk of CD oxidation and decay going on, I think it would be great if there was a movement to create perfect archives of all game CD's, especially those made for consoles. There's no point in making that effort, though, if a perfect imaging method doesn't exist.
 
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