There is exactly Zero difference. You can crossflash the Sony to the Liteon and vice versa, for they are identical hardware.
Concerning features and quality please read the review of that drive, wich is also valid for the Sony.
I personally experiences ugly scans with TY CD-R. Also, you cannot scan CD-media reliably with Liteon/Sony DVDRW drives.
The Liteon often has the better software package, this might be worth further consideration, if you don't have Nero Express or PowerDVD.