CD or Record, the sound depends on the recording process. Recordings like Led Zeppelin- In through the Outdoor and Sting- Ten Summoners Tales sound great on either medium because the production and recording process was flawless. Now, recordings like Metallica- Master of Puppets and David Lee Roth- Eat em and Smile sound poor on both mediums. If CDs were to make a comeback, it would be something like selling CDs with a full size album jacket because some guy in a boardroom thought it was a good idea to increase profit margins.