Digipack combines the concept of jewel case and disc wallet into one. The Digipack opens like a book as a disc wallet but instead of putting the disc into the pocket, the disc will seat on a black or transparent tray. You can't get more professional than this.
The advantage of Digipack over jewel case is that the cardboard cover is not as brittle as a jewel case. Jewel cases crack and get broken easily. Yet the tray of a Digipack seats on an extra cardboard which protects the tray from breaking and provides a good place for artwork.