Yes I have had in the past 4 Liteon drives (one was however a Sony which was I later found a rebadged Liteon burner).
These 4 drives were in the ratio of 2 burners and 2 roms.
I took the burners back as they both were dreadful burners (and they were bought from PC World and it is almost impossible to get them to replace anything :a )
Also whenever I read posts of problems with burners a larger % of them have been users of Liteon drives, with usually the same problems I myself experienced.
It this time however I have never once had any problems with my Benq or latest NEC drives and I have had the NEC for 2 years (this replaced the first NEC1300a which I had for 2 years prior to this also). And Benq 1650 for 13 months.
From my experience Liteon seem more interested in speed than burn quality which is the opposite of Benq, NEC and Piorneer.
Therefore I advised against buying these drives, as they are more problems than they are worth IMHO.
Hope this clears everything