Best Drive for scanning

I currently own a Optiarc 7240S which I am very happy with, but I am looking for a second drive solely for the purpose of scanning. So, what are some good drives for scanning?

The only other option is a genuine Liteon (not a Liteon branded 724x or 726x clone). Please note that Liteon drives are useless for CD scanning.

Michael

the Optiarc 7240 is a re badged NEC not LiteOn

What Meadiatek chipset Liteons would you recommend for scanning?

Or are they all similar?