I understand that the following models are basically identical, if not for the firmware versions:
Sony CRX210A1/E1 (48x12x48) - Lite-On LTR-48126S
Sony CRX215A1/E1 (48x24x48) - Lite-On LTR-48246S
Sony CRX220A1/E1 (52x24x52) - Lite-On LTR-52246S
Therefore, if the above-mentioned Lite-On models are being criticized for being noisy, would I be correct in deducing that the equivalent Sony model would also be noisy ? Would this be a reason why the Sony's use a default 40x speed limitation (i.e. in order to reduce noise).