I use Surething, not the LE version that came with my drive, I've had the full 4.3 since way before I got my LS drive. I like it, have heard Nero gives better results as far as the quality of the outputted disc. the Surething LE is on the LS web site so I'm going to assume you might have tried it. If not, I suggest you do *it's free*
besides those I don't know of any other Lightscribe proggies.