To be perfectly honest, reviews are often worthless except to get a general idea of a drive's capabilities, but real-world user experince, along with firmware changes and other tweaks that occur over the lifetime of a product can significantly alter it's overall reputation. Reviews simply do not define whether a product is good or bad, they just give you a general overview of what a product might be like. Not all reviewers are competent or thorough, either.
The LH-20A1x drives are classic, but very old. If you were to consider a Lite-On, I wouldn't look at anything older than the DH-20A4x series drives.