Optical drives have largely homogenized, save for a few neat features like dual-layer DVD burning or Lightscribe. Compared to the rest of the computer industry, optical drives have evolved into a mature technology. For a good example of the features a modern optical drive should have, look no further than the Lite-On iHAS424 DL-DVD burner. It's got everything you'd expect from a DVD-writer, including dual-layer DVD writing and reading, compatibility with both + and - formats, as well as support for lightscribe label burning if you have photosensitive media. Of course, it'll also read and write CD-Rs and CD-RWs.