I agree on using CDDB, as all you have to do is insert the CD into the drive, let the system do the lookup, and you get more info than you even asked for, such as all the track titles.

The disadvantage is IMO in limitations in CDDB. There can only be one entry per signature per genre in the central database, and I already have encountered cases where different CDs have the same signature. This is is most likely to occur for 2 track CD singles.

CDDB is in need for a serious overhaul.