I bought a Lightscribe DVD burner. It's a good burner, but the main point about this kind of burner is that it will print a label on the non-data side of the disk.
The problem is that it can take a long to print a label. A label with four simple graphics and no text takes up to 20 minutes to print.
You can print 'high quality', 'normal' and 'draft'. The higher the quality, the longer it takes, and the darker the resulting label.
If you buy colored disks, then you have no choice but to use the higher quality settings, or else your label will be too faint to be seen on the darker colors of disks, and that means you will have to do no more than four an hour. That's too slow for most people's common uses.
It's an attractive concept, burn your data on one side, turn the disk over, and print the label on the other. But colored disks will compel you to do them at the highest quality, and that means the slowest setting.
If you are concerned with the time it takes to print your label, do NOT buy colored blank disks. You'll wish you'd gotten the plain ones that take half the time to print.
By the time you find out what the disadvantages are, you'll already have the burner installed, downloaded and installed the software (it doesn't come on the NERO CD the comes with the drive, but you can download it easily from the lightscribe website), and you'll have bought the CDs. They will cost about 50 cents each, more than double what a competitive buyer will spend for ordinary blank CDs.
If you want to have this thing work well, avoid the colored blank Lightscribe CDs