My personal advice:
I'm a quality nut. As far as quality dvd burns with quality media, the LG is superior, IMHO.
The Liteon is a good drive. It allows better overspeeding, faster ripping and quality scanning. The LG can do DVD-RAM, which is a superior data backup rewritable format.
I've got some TYG01 scans attached. Both disks burned at 4x, same data, same computer, same software (Ones). Both disks scanned in 2 different scanning drives, pics are as follows:
1: 1693S scanned on 1693S (4x, 1ECC)
2: 4163 scanned on 1693S (4x, 1ECC)
3: 1693S scanned on BenQ (8x, 8ECC)
4: 4163 scanned on BenQ (8x, 8ECC)