Quadraduce

When ripping C.D.s to the H.D.D. has anyone heard a sound quality difference between the 1X and the 4X ripping speeds? Thanks, Duce

Loving this new auto of mine (Smokey Granite/ML/NAV) and I have figured most things out. Can mp3 CDs be coipied ("recorded") to the HDD. If not, I am assuming it might be a fidelity concern?? not in sound quality, but in file integrity! -Duce