My only disappointment with LabelTag is that I wish it could accommodate at least two lines of text, so that I could list music CD tracks. Otherwise, the technology is a boon for people (like me) who have miserable handwriting. True, you have to read the back of discs to see what's there, so it's probably better suited to one-offs than to large collections; but it's better than using a marking pen.
The IHAS524-T98 is a good performer, and in my hands-on examination, it wrote its entire range of supported media without incident. It's worth a few extra bucks if you like the idea of being able to neatly label your discs.