In general, I have found that to get the best write quality from any brand of drive, it's a good idea to get the fastest drive they market, then only run it at a much slower speed (say 16x). The media compatibility is usually 100% when you do this, but only very few 16x writers can write well to virtually all media at 16x, because they're working at tolerance a lot of the time.
So in LiteOn's case, the 48246s and 52246s are the best drives IMHO. I have not come across a single media type that doesn't work very well, with low C1 error rates at 16x with the 52x. And of course you're only really doubling the write time by doing this -- worth it if you're not in a hurry