When comparing both types of documents, the DHF document would seem more useful than the Tech File / Design Dossier. The DHF file gives an overall informative description of the product. The Tech File / Design Dossier document just gives a generic idea of what the product will consist of. The DHF document takes in to consideration all the design element involved and keeps track of them. In addition, this document shows the development involved in the design before publishing it and after the transfer. On the other hand, the Tech File / Design Dossier file does not include a record of all the elements involved in the design. Also, it only displays the product when it is released. Of the two documents the DHF document seems more valuable. The document has all the information on the product logged so it provides more details.