A brand is only worth their support and warranty. Specific models must be compared on their own merits.
Lite-On is currently popular in some circles due to recent models having full CloneCD functionality for cheaper than good manufacturers like Toshiba, Sony, LG, etc.
Plextor gained most of their popularity in SCSI and seem to thrive on brand recognition rather than actual functionality and are generally overpriced. Check out CloneCD compatability and you will see Plextor is sadly lacking.