From: United Kingdom
The Sony firmware edges the Liteon for +R media in some cases, it's still evolving.
Some like BS0R (latest "1633 style" firmware) while other have found serious regressions on some media.
It seems the Liteon /rebrand 1633/1653 firmwares worth looking at now are:
BS0K - a pretty good 1633S example
BS0R - the latest 1633S - though some regressions
BS41 - the Liteon US "1653 style" formware for 1633S
BYX2 - Sony "1653 style" firmware fur DRU-710a (1633s rebrand)
CS07 - extracted from 1653S
Liteon's frequently trotted out update note of "match more media" is wearing a little thin - it frequently doesn't match ANY more media, and for those that improve, there always seems to be some that regress.