It's about the same probability with any drives, whether it will be good or bad once you get it in.
Now, if you are being drawn to the LG, then go for it. It's convenient, it's cheap enough, and Stereodude said it wasn't bad. Just be aware of the limited speed selection, as mentioned (maybe 8x and 16x, 24x if the disc is supported for overspeeding, as opposed to the wide range of 4x - 6x - 8x - 12x - 16x, plus 20x - 22x -24x some drives offer) for normal write speeds. But if your discs just work at 8x or 16x, then you don't really need all the speeds in between.
Also be aware that it's a new drive that not a lot of folks have tested out, so if you run across any quirks, we'll probably have to work with you to solve things, rather than pointing you to an easy solution.