Lightscribe DVD's are a bit funny, they are one of those things that create a solution for a problem that doesn't really exist. The "labels" that are etched into the disc are quite cool, but at the same time very limited. They are great and do finish of a disc nicely, but they do add a bit of time and cost to the project. Still, not enough to stop me from buying them again.
In short I will buy these again when I run out, but I suspect they will last me a while as for most things I burn I will use a normal disc and write on it what I've put on there.