Loved my Plextors (716 sata and 755 sata) both still work, But as JackN said Plextor got out of the OEM DVD ODD and just slaps their label on a rebadged drive.
Currently using Plextor 755, a LG H20-L blu-ray which replaced a nice Samsung. I tend to shy away from Lite-on. Altho I did buy a internal Lite-on DVD writer to replace the defunk lite-on drive in a stand-a-lone lite-on 5005 DVD Recorder. Had to mod the case sligthly, but works fine.