I would say to get the Sony (Optiarc) AD7240S from Techbuy.com.au, except that seems to cost nearly $700.
The LiteOn from OfficeWorks is great for scanning DVDs. When it comes to scanning CDs, though, scans would not have as much information as the Optiarc or some other drives-- BUT it could still be used.
Also, that LiteOn could be from 3 or 4 different hardware versions. If you got it, you would have to be sure it is an iHAS324 A or an iHAS324 B. If it was an iHAS324 Y, it would actually be an Optiarc, and would be useful. If it was an iHAS324 C, it would be the newest hardware version, and may not be useful for scanning at all.