The best CD-R burner among my drives is the NEC AD-7170A.
There's a high death rate among this series of drives in my experience however; I've had two AD-7173A dead on arrival and one AD-7173A dead after a few months of light use. The AD-7170A is the only survivor.
Note: The AD-7173A and AD-7170A have identical hardware, but the firmware in the 7173 supports Labelflash.
Pioneer DVR-112L, LiteOn SHM-165P6S, Pioneer DVR-111L, BenQ DW1655, Plextor PX-760A
LiteOn LH-20A1P, Optiarc AD-7203A, Matshita UJ-840S, Sony RDR-HX910, Sony RDR-HX750